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.

Digital SCSI Hard Drive - No more SCSI drive problems! No moving parts, no noise, instant loading!

Brand new 50 pin Digital SCSI Hard Drive for use in all Mac systems that use a standard 50 pin SCSI Hard Drive. These drives have no internal moving parts, no mechanicals to fail or wear out. We build these UltraSCSI-3 units in 2 sizes starting at 500 megabytes or 2 gigabytes. Replace the old noisy and soon to fail mechanical hard drive. These units are like having all your system information in memory so everything loads quickly. We build these units here and mount them on appropriate drive trays for your application. We format them for the OS versions you plan to run. Simply slide in the drive tray, plug in the power and scsi cable. Boot your system and install your software. Units start at $299.77 including shipping. Call to order.


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

 Stock Number: DIGIDRIVESCSI

Unit Price: $299.77

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Seagate Cheetah 10k ST381203LW 18 GB Hard Drive - Used Tested

These Apple Label Seagate 10,000 RPM Cheetah Hard Drive would add some nice performance to your older SCSI system. Optimized AV streaming capabilities and tuned for audio and video. These have the 68 Pin UW configuration. We have both cards or adapters if you wish to add these to your system. They have been low level formatted and thoroughly tested. They are used pulls. Sold New for $160, our $79.77 price includes domestic shipping. Limited quantities order now.


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

 Stock Number: UWSCSI9-10K

Unit Price: $79.77

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Adaptec SCSI Card 2906, tested pulls

Moving up to a G4? Don't lose your SCSI! The Adaptec SCSI Card 2906 (tested used pull) protects your SCSI peripheral investment by providing the same internal and external connections previously available with built-in Mac SCSI. And it works with Old SCSI manager as well as newer SCSI Manager 4.3 compatible devices for maximum compatibility. It also provides 10Mbyte/sec Fast SCSI performance that is twice as fast as the previously provided built-in Mac SCSI, and 6 times faster that the standard PC parallel port. 25 Pin External SCSI connector, 50 pin Internal. NOT BOOTABLE. Requires open PCI slot, Mac OS8.5 or later. OS8/9 driver on our Kitchen Sink CD. Compatible with both old and new SCSI devices and works with older beige PCI Macs. Will not work in G5 PCI-X slots. Suggested Retail $59.99 SALE $17.77 price includes domestic shipping. We suggest the 2930 card with adapter for OSX systems.


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

 Stock Number: ADP2906-ks

Unit Price: $17.77

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Iomega Zip 100 mb Internal SCSI Zip Drive - Refurbished!

Back in stock! Internal Zip 100MB SCSI drive. Perfect replacement mechanism, fully cleaned and tested. Why put up with erratic or bad performance, replace your old Zip with one that functions perfectly! Includes Kitchen Sink CD with latest drivers. $49.77 includes your shipping!


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

 Stock Number: zip100intscsi-ks

Unit Price: $49.77

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Apple/Adaptec 2930 SCSI PCI interface card - Apple ROM, bootable! Works in 9 or X. System pull with 25 pin adapter $39.77

WITH 25 PIN ADAPTER! Adaptec/Apple ROM PowerDomain® 2930 Ultra SCSI PCI card for Macintosh. We include the external mini 50 to 25 pin adapter! This 32-bit PCI to Ultra SCSI adapter supports 7 SCSI devices, with 20 MB per second throughput. Provides an internal 50-pin connector, and an external 50-pin high density connector. Apple original card (OEM) including Apple ROM- same card as was included with the Blue & White G3 systems and features: FULLY COMPATIBLE with Mac OSX through Tiger, Gain Ultra SCSI speed: 20MB/sec data transfer rate, Preserve investment in existing SCSI peripherals, Take advantage of the newest SCSI peripherals, Increase performance of existing SCSI peripherals, Achieve broadest compatibility. Perfect addition if you need SCSI with your G4 Tower. Requires an open PCI slot (will not work with G5 PCI-X slots). Operating Systems: MacOS 8.0 or greater - Full Mac OS X through Tiger support using Apple's built in drivers. Your price $39.77 including shipping.


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

 Stock Number: APLADP2930adapt

Unit Price: $39.77

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UltraWide SCSI Card & 18 GB UW Drive Combo $99.77 shipped!

Great solution for an older PowerPC with PCI slots, including Rev1 Blue & White units. This combo comes complete with the ATTO Ultrawide Card, 18 GB Refurb Hard Drive (various name brand) and cable! These are used, cleaned and tested pulls. Want a speed increase in your system. Install one of these units for your base drive. UltraWide 68 Pin SCSI. Includes the Apple/ATTO ExpressPCI PSC SCSI Card. These are used drives, we refurbish them by low level formatting and thoroughly testing them. They work straight up with OS8 and 9. Our $99.77 includes your shipping.


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

 Stock Number: ATTOIBMcombo

Unit Price: $99.77

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Apple/Adaptec 2930 SCSI PCI interface card - Apple ROM, bootable! System pull. X compatible! (APLADP2930) $29.77

Adaptec/Apple ROM PowerDomain® 2930 Ultra SCSI PCI card for Macintosh. This 32-bit PCI to Ultra SCSI adapter supports 7 SCSI devices, with 20 MB per second throughput. Provides an internal 50-pin connector, and an external 50-pin high density connector. Apple original card (OEM) including Apple ROM- same card as was included with the Blue & White G3 systems and features: Fully compatible with Mac OS X through Tiger, Gain Ultra SCSI speed: 20MB/sec data transfer rate, Preserve investment in existing SCSI peripherals, Take advantage of the newest SCSI peripherals, Increase performance of existing SCSI peripherals, Achieve broadest compatibility. Apple original card (OEM) including Apple ROM- same card as was included with many of the Blue & White G3 systems. Requires an open PCI slot (will not work with G5's with PCI-X slots). Operating Systems: MacOS 8.0 or greater - Full Mac OS X through Tiger support using Apple's built in drivers. Your price $29.77 shipped


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

 Stock Number: APLADP2930

Unit Price: $29.77

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Adaptec 2940 SCSI PCI interface card (pull) (APLADP2940) $19.77 shipped!

Adaptec PowerDomain® 2940 Ultra SCSI PCI card for Macintosh. This 32-bit PCI to Ultra SCSI adapter supports 7 SCSI devices, with 20 MB per second throughput. Provides internal 68 pin, and an external LVD SE high density connector. Gain Ultra SCSI speed: 20MB/sec data transfer rate, Preserve investment in existing SCSI peripherals, Take advantage of the newest SCSI peripherals, Increase performance of existing SCSI peripherals, Achieve broadest compatibility. Operating Systems: MacOS 8.0 or greater. Was $39.77 Clearance price $19.77 includes shipping.


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

 Stock Number: APLADP2940

Unit Price: $19.77

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JackHammer UltraSCSI PCI Card with Internal 68 Pin UW, External 68 Pin UW. Tested Pull. $24.77 Free Shipping

Want your system to be faster? Hook this PCI card to an UltraWide 68 Pin SCSI drive and watch the files fly at 40 MB/sec. data-transfer rates! A regular drive sysinfo run about 480, with an UW it runs over 660! Also works well with your older 50 Pin drives. Just add a 50 Pin adapter. Not tested with OSX. Was $49.77 Your price $24.77 Free Shipping! Buy one of these and an UW drive and we will throw in a UW SCSI cable on your phone order.


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

 Stock Number: jackhammer

Unit Price: $24.77

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Adaptec PowerDomain SCSI APD-29160N MAC for G4, Early G5

Adaptec's PowerDomain 29160N accelerator delivers unrivaled Ultra160 SCSI performance for the Macintosh, while providing backwards compatibility with existing SCSI devices. It's the ideal way for creative professionals to accelerate system performance and take advantage of maximum configuration flexibility for publishing, design, multimedia, and other data- and graphics-intensive applications. Gain 160 MByte/sec data transfer rate I/O performance. PORTS: External 68-pin High-Density SCSI connector, Internal 68-pin LVD Ultra160 SCSI connector, Internal 50-pin Standard SCSI connector REQUIRES: Mac OS9 or X. WORKS IN: PCI Based G3 & G4 Systems and early PCI and PCI-X based G5's. This card is Refurbished, cleaned and tested. Orignal Retail $329.99. Our $129.77 includes shipping.


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

 Stock Number: APD-21960Nmac

Unit Price: $129.77

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Small Drive Jumper - $1.99 includes shipping!

Package of 6 Small Drive Jumpers (2mm Gold Plated) fits most SCSI drives and also works in other places jumpers (sometimes called shunts) are used. Overclocking Mac G3 computers is an example of another place these small size jumpers are used. Shipping included! Call for large quantity prices.


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

 Stock Number: jumper1

Unit Price: $1.99

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Large Drive Jumpers - $1.99 includes shipping!

Package of 6 Large Drive Jumpers 2.5mm (Tin Plated) fits most IDE/ATA drives and also works in other places jumpers (sometimes called shunts) are used. Used to configure your 3.5 IDE type drives as a master or slave. Shipping included! Call for large quantity prices.


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

 Stock Number: jumper2

Unit Price: $1.99

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Jumper Combo - $2.99 includes shipping!

Not sure what size you need? Order this and get 6 Large Drive Jumpers 2.5mm (Tin Plated) 6 Small Drive Jumpers 2mm (Gold Plated). Shipping included! Call for large quantity prices.


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

 Stock Number: jumpercombo

Unit Price: $2.99

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Shorty Small Drive Jumper - $4.99 includes shipping!

Package of 4 Extra Short Small Drive Jumpers (2mm) fit SCSI drives where an extra LOW PROFILE is required and also works in other places jumpers (sometimes called shunts) are used. Shipping included! Call for large quantity prices.


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

 Stock Number: jumper3

Unit Price: $4.99

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Sony Internal SCSI DAT DRIVE

Sony SDT4000 used in good condition. Uses 4MM DAT Media stores up to 4GB of data. 3.5" form factor. $129.99 includes shipping.


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

 Stock Number: datdrive

Unit Price: $129.99

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Apple Label Internal 2GB SCSI DAT DRIVE

Apple Label (HP35480A) Internal 2GB SCSI DAT DRIVE used working pull in good condition. Uses 4MM DAT Media stores up to 2GB of data. 3.5" form factor. Works with Retrospect, and other tape backup software. $99.99 includes shipping.


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

 Stock Number: datdrive-apl

Unit Price: $99.99

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Internal 3.5" Floppy Replacement Drive - Refurbished Genuine Apple!

These are thoroughly cleaned and fully tested pulls from working systems. These are genuine Apple floppy drives, new style with door cover. R/W 1.4-800K-400K. If your drive is not working properly now is the time to replace it! We disassemble, clean, lubricate and thoroughly test each drive. Our $49.77 includes your shipping! Mail your old floppy back in for proper recycling.


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

 Stock Number: floppy

Unit Price: $49.77

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Drive Screws - $1.99 with order

Package of 6 Small Drive Screws fits most hard drives. This size screw is commonly used on computers, replace those missing ones. #6-32x1/4". With any order.


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

 Stock Number: screws1

Unit Price: $1.99

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Drive Sled for Mounting 3-1/2" Internal Drives for 6400/6500 series.

5-1/4" Sled for mounting a 3-1/2" SCSI internal drive in the top bay or your PM6400 or 6500. 4 screws are included. Dealers call for bulk pricing.


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

 Stock Number: drivesled3

Unit Price: $10.00

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Lower Drive Sled for Mounting 3.5" Internal Drives

RARE FIND! Finally back in stock. These have not been available on the market for some time. We bought the entire lot but had to pay a bit more than usual for them. This is the proper sled for mounting 3.5" internal drives in the lower bay of 7200-7600 series and G3 Desktop (beige). 4 each 6-32 screws are included. $15.00 with any order.


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

 Stock Number: drivesled-lower

Unit Price: $15.00

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Upper Drive Sled for Mounting 3.5" Internal Drives

Sled for mounting 3.5" internal drive in Quadra/Centris 610/660av, Quadra 800/840av, PowerMac 6100/8100/8500/9500 and the top bay of 7200-7600 series and G3 Desktop(beige). 4 each 6-32 screws are included. Call for quantity discounts.


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

 Stock Number: drivesled-upper

Unit Price: $10.00

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