Operator Headgap Systems Resale Store



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Order online or by FAX 405-445-0796. Mail orders hit the HELP button to read ordering instructions.

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.

iMac 20" Aluminum Core 2 Duo 2.4 GHz, 2GB RAM, 250GB HD, DVD Burner SuperDrive, AirPort WirelessN, w/Webcam & Bluetooth, includes shipping!

LOWEST EVER PRICE! Great system for home, or office! Run up to EL CAPITAN 10.11.6! The built-in 20-inch glossy widescreen TFT active-matrix LCD offers an impressive 1680x1050 resolution and has all the Apple software you need with iPhoto, iMovie, iTunes, iPhoto, and GarageBand included! These iMacs is powered by an Intel Core 2 Duo 2.4 GHz processor and 2 GB DDR2 SDRAM so it can handle all your computing tasks with ease! Store your multimedia life on its 250 GB 7200 RPM hard drive and compute in a simple and easy-to-use environment with OSX 10.6.8 pre-installed. Load more software, music, photos, and data with the built-in slot-loading DVD±RW DL SuperDrive. Snap pictures and video-chat with friends and family using the built-in iSight camera. Connect to high-speed networks and the Internet with the built-in AirPort Extreme N wireless and built-in 10/100/1000BASE-T Gigabit Ethernet. Add wireless peripherals with Bluetooth 2.1+EDR support. Firewire 800/400, 3 USB 2 ports. OSX10.11 El Capitan capable comes with OSX 10.6.8 Snow Leopard preinstalled (call for options). Aftermarket Keyboard and Mouse included. Our SuperSink DVD chock full of Freeware and Shareware is included. VALUE $399.77 LOWEST EVER $299.77 price includes domestic shipping. These units use the faster 6400 RAM upgrades: 2 slots comes with 2 1GB chips, add a 4GB stick for $109 or 2 GB stick for $32 Max. 6GB. We can install the new SUPERFAST Hybrid 1 or 2 TB Hard Drives (call).


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

 Stock Number: iMacAlum20a877-2.4

Unit Price: $299.77

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iMac 20" Aluminum Core 2 Duo 2.66 GHz, 2GB RAM, 320GB HD, DVD Burner SuperDrive, AirPort WirelessN, w/Webcam & Bluetooth, includes shipping!

Great FASTER system for home, school or office! FASTER Penryn Processors! The built-in 20-inch glossy widescreen TFT active-matrix LCD offers an impressive 1680x1050 resolution and has all the Apple software you need with iPhoto, iMovie, iTunes, iPhoto, and GarageBand included! These iMacs is powered by an Intel Core 2 Duo 2.66 GHz processor with two independent processor "cores" on a single silicon chip, a 6 MB shared level 2 cache and 2 GB DDR3 SDRAM so it can handle all your computing tasks with ease! Store your multimedia life on its larger 320 GB 7200 RPM hard drive and compute in a simple and easy-to-use environment with OSX 10.6.8 pre-installed. Load more software, music, photos, and data with the built-in slot-loading DVD±RW DL SuperDrive. Snap pictures and video-chat with friends and family using the built-in iSight camera. Connect to high-speed networks and the Internet with the built-in AirPort Extreme N wireless and built-in 10/100/1000BASE-T Gigabit Ethernet. Add wireless peripherals with Bluetooth 2.1+EDR support. 1 Firewire 800, 4 USB 2 ports. FAST graphics with 256 MB of memory, and built-in stereo speakers underneath the 20" glossy TFT Active Matrix LCD (1680x1050 native) display. Up to OSX10.11 El Capitan capable (more RAM required) comes with OSX 10.6.8 Snow Leopard preinstalled (call for options). Aftermarket Keyboard and Mouse included. Our SuperSink DVD chock full of Freeware and Shareware is included. EVEN LOWER $349.77 price includes domestic shipping. These units use 2 slots comes with 2 1GB chips, Upgrades: 2 slots comes with 2 1GB chips, add a 4GB stick for $115 or 2 GB stick for $40 6GB Maximum. Optionally we can install the new 1 or 2 Terabyte Seagate Hybrid Drives for more capacity and speed. Call for options.


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

 Stock Number: iMacAlum20-2.66

Unit Price: $349.77

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iMac Aluminum 21.5" Core i3 Dual-Core 3.06GHz, 4GB RAM, 500GB HD, SuperDrive, Radeon HD 4670 AirPort Wireless-N, Bluetooth w/Webcam, Keyboard & Mouse

Run up to 10.13 High Sierra. SUPER PRICE DROP on this FAST iMac "Core i3" 3.06 21.5-Inch Aluminum (Mid-2010) is powered by a dual core 3.06 GHz Intel "Core i3" I3-540 (Clarkdale) processor with a dedicated 256k level 2 cache for each core and a 4 MB shared level 3 cache. In lieu of a system bus, it has a "Direct Media Interface" (DMI) that "connects between the processor and chipset" at 2.5 GT/s. Our refurbished unit is configured with 4 GB of RAM (1333 MHz PC3-10600 DDR3 SDRAM), a 500 GB (7200 RPM) hard drive, a vertically-mounted slot-loading DVD±R DL "SuperDrive", and ATI Radeon HD 4670 graphics with 256 MB of dedicated GDDR3 memory. It also has a built-in iSight video camera and built-in stereo speakers underneath the 21.5" glossy 16:9 LED-backlit TFT Active Matrix LCD (1920x1080 native) display "with IPS technology". Connectivity includes four USB 2.0 ports, a Firewire "800" port, built-in AirPort Extreme (Wireless N), and Gigabit Ethernet, as well as an audio capable Mini DisplayPort, which supports an external display up to 30" (2560x1600). Built-in Bluetooth 2.1+EDR. Built-in Microphone. Externally, this iMac uses "edge-to-edge" glass design and "seamless all aluminum enclosure". This iMac includes a Keyboard and Mouse" OSX 10.13 HIGH SIERRA capable comes with OSX 10.6.8 Snow Leopard preinstalled (or call for options). Our SuperSink DVD chock full of Freeware and Shareware is included. WAS $699 REDUCED PRICE $499.77 price includes domestic shipping. This unit can take up to 16GB of RAM, 4GB Chip $40.77, 8GB Chip $60, room for 2.


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

 Stock Number: iMaci5DualCore306c508

Unit Price: $499.77

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Apple Internal 56k v.90 Fax Modem for G3 Blue&White/G4 Yikes(PCI) and iMac Rev A-D 233-333Mhz models - Used Tested $19.99 Shipped

Apple 56K Internal Modem V.90 for the B&W G3 Power Macintosh, Yikes G4, (and iMacRev A-D 233-333) is an internal 56K V.90 modem is designed to be installed in the modem communications slot inside your computer, allowing you to save your PCI slots and USB ports for other resources! With features not found in any other modem this affordable, the Internal 56K comes complete with everything you need. Uses the built in software. Note: For Blue & White G3, G4 "Yikes" model that is based off of the same logic board and iMac Rev A-D 233-333's. This V90 modem features up to 56,000 bps Data modem transmission speeds: Full duplex at 33,600 (V.34 annex 12), 28,800, 14,400, 9600, 4800, 2400, 1200 and 300 bps Error correction: V.42 (LAP-M), MNP2-4 Data compression: V.42bis, MNP5 Fax speeds: 14,400, 9600, 7200, 4800 and 2400 bps Fax standards: Group 3 compatible, V.17, V.29, V.27ter, EIA-578 service, Class 1 commands Upgradability: Flash ROM and flash DSP Requirements: Any Power Macintosh G3 with internal COM slot. System software version 8.5 or later Minimum 4MB RAM Minimum 8MB hard disk space. Standard analog phone line. We include our 9 Kitchen Sink CD (9.99 value) that has other telecom and fax software. Was $34.77 REDUCED SPECIAL $19.99 includes domestic shipping.


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

 Stock Number: BWModem56Kint-KS

Unit Price: $19.99

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iMac G4 Power Cord

iMac G4 Power Cord. Special 3 prong connector. New Black only. Our $14.88 price includes domestic shipping.


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

 Stock Number: iMacG4PowerCord

Unit Price: $14.88

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Internal iMac G3 Apple CD-Rom 24x - Slot Load Replacement - $49.77 shipped!

Price Reduced! For iMac G3. Internal 24X Slot Load CD-Rom. Genuine Apple Drive (no logo on item). Apple Bootable, Used tested units. Perfect replacement. Was $49.77 Special $39.77 shipped. Installation instructions available on request.


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

 Stock Number: cd24x-imac-slot

Unit Price: $39.77

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CD or DVD Adapter for Slotload iMacs

Adapter for CD or DVD mechanism for Slotload iMacs. You should have pulled the old one before throwing away your old mechanism, but you already know that now. Our $14.99 price includes shipping.


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

 Stock Number: imaccdadaptslot

Unit Price: $14.99

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CD or DVD Adapter for Trayload iMacs

Adapter for CD or DVD mechanism for Trayload iMacs. You should have pulled the old one before throwing away your old mechanism, but you already know that now. Our $14.99 price includes shipping.


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

 Stock Number: imaccdadapttray

Unit Price: $14.99

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White Thermal Grease Compound - New!

I use a small amount of this thermal grease to keep the CPU's from sticking to the gasket and to improve heat transfer. Use this or any compound sparingly as too much can cause problems. This is also required when you dissassemble Flat Screen iMacs for battery replacement. You actually break the thermal seal on the Flat Screen iMac when you remove the base and it must be renewed when reassembling the iMac to prevent damage. Computer processors generate a lot of heat. Too much heat will cause damage to this costly component! Increase the heat dissipation of CPUs and improve performance with this Thermal Grease compound! Mirror Drive Door owners take note you need to add this to your system now! Tiny syringe type applicator for easy spreading. 1.0 gram of Thermal Compound (Thermal Grease) for CPU use. Covers approximately 10-15 small CPUs. Helps the heat dissipation from a CPU to a heatsink. Our price $2.99 with any order.


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

 Stock Number: thermalwhite

Unit Price: $2.99

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