Operator Headgap Systems Resale Store



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We accept School & Institutional P.O.'s for orders over $100. Discounts for large quantities are available. Call for a quote.

Upgrading the Office? Sell or Trade In Your Old Mac (G3 or better)! We buy quantities of Mac systems & components. Email your list for a quote!

Low End Macs have valuable information about legacy Mac Systems

Our friends at Low End Macs have valuable information about legacy Mac Systems. Click the button to visit their site.

Our friends at EveryMac.com have valuable information about legacy Mac Systems including the original specifications of many of the machines we sell. Click the button to visit their site.

Universal Macintosh to PC Monitor Adapter - New!

Hook a low cost PC monitor or LCD for your Mac! Lets face it, 17" PC monitors and LCD's can be had at bargain prices at most discount houses. Apple hasn't sold a beige CRT type monitor since 1997. Use this adapter with a low cost PC monitor on your Mac system! Works with resolutions from 640x480 to 1600x1200. Monitor sizes from 14" to 21". Adapts Macintosh DB 15 pin video connection to PC monitor HD15(VGA) pin connection (2 row 15 pin to 3 row 15 pin). 10 pin adjustable settings w/manual. Style may vary from picture. Compare at up to $44.99 Our price $24.99 includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: MonAdap

Unit Price: $24.99

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ATI Radeon 9000 Pro 64MB AGP Graphics Card

Great graphic card upgrade for your Mac G4. These working tested pulls originally were installed in the G4 Mirror Drive Doors. Flexible dual display support including ADC for Apple flat panels, Mac OS X compatibility works equally well in earlier OS versions. FITS: Power Mac G4 (QuickSilver 2002ED), Macintosh Server G4 (Mirror Drive Doors), Power Mac G4 (FW 800), Power Mac G4 (Mirrored Drive Doors), Power Mac G4 (QuickSilver), Power Mac G4 (Mirrored Drive Door 2003) This card has one ADC Port and 1 DVI-I Port. Displays require ADC enabled PowerMac G4. VGA adapters available in this section if you need one. Our $129.77 price includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: ATI9000PRO-AGP

Unit Price: $129.77

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NVIDIA GeForce GT120 Mac Pro Video Card 512MB VRAM

Upgrade your Mac Pro Tower with this Apple Video Card NVIDIA GeForce GT 120 512MB for Mac Pro 2008 & 2009 Mini DisplayPort & dual-link DVI ports. Works with  Mac Pro (Early 2008), Mac Pro (Early 2009), Mac Pro 3,1 Mac Pro 4,1. Uses PCI Express 2.0 interface. DVI and MiniDisplay out, Adapters available to connect to VGA displays. Refurbished, tested. Requires Mac OS 10.5.6 or later. Our $189.77 price includes domestic shipping.


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 Stock Number: NVIDIAGT120

Unit Price: $189.77

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NVidia GeForce4 MX ADC/DVI 64MB Video Card, AGP for Early G5

NVIDIA G4Force4MX 64MB Video Card(ADC/VGA)(AGP) for G5. Used test pull in perfect condition. Supports both Quartz Extreme and Core Video under OS10.4 and above. Fits early G5 models that have AGP graphics ports. Has both DVI and ADC ports. Our $89.77 price included domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: NVID661-2921-G5

Unit Price: $89.77

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Apple Video Card NVIDIA 6600LE 128MB PCI Express DVI/DVI for Power Mac G5 Late 2005 Refurbished

NVidia 6600LE 128MB PCI Express DVI/DVI for LATE 2005 G5. Will not work in earlier models and requires the PCI Express Style Slots. Used test pull in perfect condition. Supports both Quartz Extreme and Core Video under OS10.4 and above. (631-0064) One only order now. Our $179.77 price includes domestic shipping


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 Stock Number: NVIDIA6600LEG5PCIExpress

Unit Price: $179.77

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ATI Rage Pro AGP-ADC/VGA -$39.77 shipped

ATI Rage Pro AGP 16MB Video Card for G4 Tower AGP slot. These work in a G4's special AGP slot. They will not work in a PCI slot. Tested pull. These cards have HD15 VGA and ADC out. For the ADC (Apple Cinema Display type connector) to be powered you must have the 28V source supplied by the motherboard in later model G4's like the Gigabit Ethernet and Digital Audio's. LOWER $39.77 includes domestic shipping.


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 Stock Number: ATIRAGEPROAGPADC

Unit Price: $39.77

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XClaim VR Pro 4MB Video Card - SALE $39.77 shipped

This card is great for giving you the extra VRAM you need to drive a more modern LCD. The XClaim VR is an video card that anyone looking to give their Mac's graphics a boost or add greater multimedia features should consider. This card has an upgrade spot that the 4MB VRAM chip we stock for $22.77 would allow you to have 8MB of VRAM. It has both S-Video and RCA Video connectors besides the usual Mac DB15 connector. Will work with PC monitors with our optional Universal Mac To PC adapter (listed above). This will work in all Beige PowerPC systems with PCI slots available up to the G4 Towers. Good for adding a second pallet monitor. Works straight up in 9 or X as well. SALE $39.77 price includes shipping.


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 Stock Number: XCVRPRO4MB

Unit Price: $39.77

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ATI Radeon 9600 128 Mb DUAL DVI Video Card PowerMac G5

Want to add two DVI monitors easily and improve your video performance at the same time. This ATI Radeon 9600 card has 128MB of Memory and can drive two DVI monitors at once. Refurbished, cleaned and tested unit. Our $109.77 price includes domestic shipping. Limited quantities order now. Ask about trade-in on your old working card.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: ATI9600DUALDVIG5

Unit Price: $109.77

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ATI Radeon 9600XT 128mb ADC/DVI Video Card for PowerMac G5

Want to improve your video performance? This ATI Radeon 9600XT card has 128MB of Memory and can drive a DVI or an ADC monitor. Refurbished, cleaned and tested unit. Our $119.77 price includes domestic shipping. Ask about trade-in on your old working card.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: ATI9600XTADCDVI

Unit Price: $119.77

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IXMicro Twin Turbo PC Out 2MB PCI $29.77- Shipping Included! FREE (9.99 value) Kitchen Sink CD includes drivers!

Low Priced Bargain Graphics Card for your PCI Mac! Features PC HD15 output only. Powered by IXMICRO's 128-bit 2D/3D controller, TwinTurbo 128-3D, and dual ported EDO VRAM, the IXMicro Twin Turbo is capable of driving today's large monitors at high resolutions and color depth while maintaining fast, ergonomic refresh rates.These are used cards bulk packed and each unit is tested before shipping. They WORK on PC monitors, but require an adapter for MAC monitors. Drivers & manual on FREE Kitchen Sink CD. Shipping included. Note: Short size PCI card (7"). Check your slot size before ordering. These work in OSX but will probably not work for the install. I have used these in Beige G3's as a pallet monitor with OSX already installed. I do not recommend these for faster bused machines like the B&W or G4 Towers.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: vidcard2mbPCout-ks

Unit Price: $29.77

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Macintosh Monitor to PC (G3/G4) Adapter - New!

Use your old Mac monitor on your G3 or G4, or on a PC! Sometimes called a reverse adapter. Style may vary from picture. Compare at $24.99 Our price $14.77 includes shipping!


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: C88M

Unit Price: $10.00

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VRAM DIMM 1 MB package of 2 - Low $19.77 shipped price!

Double the Video Ram in Your PowerPC for less than $20. Improve your graphic performance on your PCI based PowerPC NOW! LOWER price on this VRAM Upgrade. 1MB VRAM DIMMS upgrade your 7200, 7500, 7600, 7300, 8500, 8600, 9600. More colors at higher resolutions and faster performance! Installed in pairs except for the 7200 which has 1 MB on board VRAM and only 3 slots available. Used tested pulls. All but the 7200 use pairs. Was $29.77 NOW 2 for $19.77 includes domestic shipping.


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 Stock Number: VRAM1MBDIMM

Unit Price: $19.77

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6100/7100/8100 Apple PowerPC Monitor Adapter

Apple HDI45 Cable adapts the 6100/7100/8100, Performa 61XX series, Workgroup Server 6150 or 8150, to a regular Mac DB 15 monitor cable. These are tested used pieces in good condition.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: HDI45Cable

Unit Price: $29.98

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6' Monitor Power Cord - Power up your monitor through your computer!

Power Up and Shut Down your monitor through your computer. Hooded power cord hooks to the back of MOST all Macs letting the CPU power up control the monitor on and off. Works with most all Macs up through G4 Towers that have the extra power hook up for the hooded plug in the back. $4.99 includes shipping.


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 Stock Number: monpower

Unit Price: $4.99

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Mac Monitor Cable

Low cost Mac monitor cable. 6 Foot DB15 to DB15. Our Low Price $12.77 includes shipping!


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: moncable2

Unit Price: $12.77

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HD15 to HD15 Monitor Cable

HD15 to HD15 Monitor Cable (may be used) approx. 4 ft. Sometimes called VGA, 3 rows 15 pins. $16.88 includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: moncable1

Unit Price: $16.88

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Mini-VGA to VGA Monitor Adapter

The Apple VGA cable was specially designed to allow users to connect an eMac, iMac flat panel, PowerBook G4 (12" TFT display), or iBook to an extra VGA monitor or external projector (equipped with VGA) for 24-bit video-mirroring. The VGA cable plugs into the VGA video-out port built into your eMac, iMac flat panel, PowerBook G4 (12"), or iBook. Important: Compatible only with eMac, iMac, PowerBook (12") or iBooks having a VGA port. DOES NOT WORK WITH THE MINI DVI PORT. MFP#: M8639G/A. Apple Part No.: 603-0607 or 922-4554 or 591-0006. Our $14.77 price includes domestic shipping


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: minivga

Unit Price: $14.77

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6' Heavy Duty HDMI (M) to HDMI (M) Video/Audio Cable w/Gold-Plated Connectors (Black)

When I needed a couple of HDMI cables to connect up our new HDTV and DVD Player I visited our local discounter who wanted $30 per cable. We now sell the same high quality heavy duty cables for $14.99 including shipping. I use these same cables to connect high definition components with this 6-foot HDMI (M) to HDMI (M) Video/Audio Cable! This male to male cable is designed for use with high-def devices with HDMI connectors including HDTVs, Blu-ray DVD players, cable or satellite boxes, A/V receivers, game consoles, even some of the new LCD monitors, and more. Plus, it features gold-plated connectors for maximum signal transfer! Our $14.99 price includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: OHSDX-AV002

Unit Price: $14.99

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Apple Micro-DVI to Video Adapter

The Apple Micro-DVI to Video Adapter is designed to fit the slim profile of the MacBook Air. This adapter allows you to connect to most S-Video or Composite video devices. This adapter connects to the Micro-DVI port on your MacBook Air and provides both S-video and Composite video connectors, allowing you to view content from your computer on devices such as TVs, VCRs, or overhead projectors with S-Video or RCA (Composite) connectors. Our $29.77 price includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: MICRODVIAADAPTER

Unit Price: $29.77

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8" Mini DisplayPort (M) to HDMI (F) Adapter w/HDCP Support - Connect a HDMI Display to Your Apple Notebook!

Connect your Apple notebook to your HDTV or other digital display with this 8-inch Mini DisplayPort to HDMI Adapter! The 8-inch Mini DisplayPort to HDMI Adapter will allow you to connect any Apple notebook with a Mini DisplayPort to a larger digital display or to HDTV. Perfect for work presentations, video and photo editing, photo slide shows and home movies! Our $19.77 price includes domestic shipping


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: CV-10011

Unit Price: $19.77

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DVI (M) to HDMI (F) Adapter (Black)

Connect your male HDMI cable to this DVI Male to HDMI Female Adapter! The Adapter features a DVI Male end and an HDMI Female end. It is perfect for converting an HDMI male connector on your existing cable to a DVI male connector.  Connect your HDMI cables to DVI monitors, or HDMI cables to older televisions that have DVI inputs! Our $9.97 price includes domestic shipping 


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 Stock Number: DVI2HDMI04-0017

Unit Price: $9.77

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Mini-DVI to DVI-D Female adapter

Mini-DVI to DVI-D Female Adapter Cable for 12-inch PowerBook G4, Intel-based iMac, MacBook Intel-based laptop, Intel-based Xserve, or 2009 Mac Mini. Hook up a DVI-D external monitor to your computer. The specification for DVI-D does not support analog video signals, so this adapter will not work if used with a DVI-to-VGA cable, or with a DVI-I cable. Please check your monitor's input ports to be sure it has a DVI-D input. Highest resolution supported: 1920x1200 @60Hz. DVI-D to DVI-D cable required.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: minidvi2dvid

Unit Price: $14.99

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DVI to VGA Adapter

Adapts VGA (HD15) to a DVI output like those on many G4 and G5 systems. Our $19.77 price includes domestic shipping.


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 Stock Number: DVI2VGA

Unit Price: $19.77

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Mini Displayport to DVI Adapter

This adapter allows you to attach a 2nd monitor to a mini displayport equipped iMac, MacBook, MacBook Air or MacBook Pro. The mini displayport was used on Macs from early 2009 to mid 2011, approximately.  To be sure your Mac uses the mini displayport, check the symbol next to the port. If you have a Thunderbolt port (which looks like a mini displayport), the symbol will look like a lightning bolt. If not, then you have the mini display port. See drawings above. Our $19.77 price includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: MINIDISP2DVI

Unit Price: $19.77

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Mini DisplayPort to VGA Adapter

Mini DisplayPort to VGA Adapter. Every Mac with a Mini DisplayPort allows you to connect an external display or projector using an adapter. You can use an external display as your main workspace or to extend your desktop, or you can work in mirrored mode with a projector so you can view what your audience sees. Use the Mini DisplayPort to VGA Adapter to connect your Mac to a standard analog monitor, projector, or LCD that uses a VGA connector or cable. Review the documentation or check with the manufacturer of your monitor to make sure you're choosing the right adapter. Compatible only with Mac computers with Mini DisplayPort. Our $24.77 price includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: minitovga

Unit Price: $24.77

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Mini-DVI to VGA adapter

Plug a big display into your Mac. The Apple Mini-DVI to VGA Adapter is designed for use with the iMac (Intel Core Duo), MacBook, and 12-inch PowerBook G4. Connect the adapter to the Mini-DVI port of the computer and the VGA end of the adapter to an external VGA monitor or projector. Our $14.77 price includes domestic shipping.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: MINIDVI2VGA

Unit Price: $14.77

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4 Bit Apple Video Card - NUBUS

Works in Mac II series computers with an open nubus slot. $10.00 includes shipping. We have other NUBUS cards available, but only in limited quantities by various manufacturers like Radius, SuperMac etc. Call for more information.


Shipping charges included in price of item. Sales tax added for Oklahoma residents only.

 Stock Number: CARD-MACII

Unit Price: $34.77

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