Operator Headgap Systems Resale Store



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Domestic shipping charges included in the price of the item. Sales tax added for Tennessee residents only. International Customers read this.

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Order online or by FAX 615-523-1360. 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.

Power Macintosh "QuickSilver" G4 800* MHZ 512MB RAM, 40 GB HD, ComboDrive - $479.77 INCLUDES SHIPPING

Boots into OS9 yet runs OSX 10.4.11 allowing you to use fairly modern browsers and software. This nicely upgraded refurbished QuickSilver features an optimized processor running 800* MHz PowerPC 7450 (G4) (optimized 733) processor with the AltiVec "Velocity Engine" vector processing unit and a 256k level 2 on-chip cache. We install refurb ComboDrive (reads DVD's, burns CD's) and include Toast. 512MB of RAM Installed (tested used). We put in a refurb 40 GB Drive for increased performance. No zip (optional, call) We thoroughly clean and rigorously test each unit. NVIDIA GeForce2 MX (AGP 4X) video card with 32 MB of SDRAM (Quartz Extreme in X), and a digital audio sound system with a highly-efficient Tripath "Class T" amplifier in a translucent silver and white tower case with a fold down door on the side that makes upgrading very easy. Includes as all G4's do the standard 2 port USB1.1 and 2 Firewire 400 ports. Fast 133mhz Bus. 4 open PCI slots for expansion. Built in Gigabit Ethernet, NO MODEM - add a built in 56K Modem +$10. Install more ram $49.77 for 512MB (holds 1-1/2GB Total). These systems come with two each built in Firewire and USB ports. These units have Apple's ADC or HD15 (PC Style) Video out. OSX Tiger and OS9.2.2. This unit's processor is just under Leopard's requirements. Manual (.pdf) and free Kitchen Sink DVD on system. Order mouse or keyboard separate. Call to add Wireless-N $34.77, or ask about other build options! We will sub in a Brand NEW Digital 120GB Hard Drive in place of the refurb 80 for +$90 Call. Our $479.77 price includes domestic shipping. Sell us or let us repair your old unit. Call or email.


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

 Stock Number: G4-QS800

Unit Price: $479.77

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Solid State 120GB Drive Kit for your G4! Special Introductory Price!

Operator Headgap tested and approved. Improve Performance! Now more affordable you can move up to the latest technology on your G4 and still run OSX or OS9.2.2 and boot from either. This 2.5" SSD comes with an adapter that features the ability to be set to Master, Slave or Cable Select for maximum compatibility. The 120GB Size is the largest size most G4 can run. FASTER DATA ACCESS! This speeds up almost everything you do on your Mac! More reliable than the old conventional drives, no moving parts, no noise. We include velcro so it is simple to mount anywhere that is convenient. WORKS in ALL G4 Macs and connect to a standard IDE connector. We preformat these and can preinstall call for custom configuration. Regularly $119.77 OUR $99.77 introductory price includes domestic shipping.


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

 Stock Number: SSD120-G4

Unit Price: $99.77

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Power Macintosh G4/450 DUAL, 512MB RAM, 40GB HD, DVD/CD Drive - $359.77 INCLUDES SHIPPING!

ONLY ONE ORDER NOW! RUN OSX or OS9. These Upgraded Sawtooth PowerMac G4/450 DUAL's (2 processors) come nicely configured. They come with a standard DVD/CD Drive. 512MB of RAM Installed. We put in a refurb 40 GB Drive (Fast New Solid State Drives available call). We thoroughly clean and rigorously test each unit. Video Card: 16 MB ATI RAGE 128 Pro AGP. Built in 10/100 Ethernet, NO MODEM - add a built in 56K Modem +$10. It has a spot for the optional Airport card. Install more ram $49.77 for new 512MB SDRAM. These systems come with two each built in Firewire and USB ports. Service manual (.pdf) on system. Keyboard and Mouse available extra. Free Super Sink DVD. Mac OS10.4.11 and 9.2.2 dual bootable. Weight: 38 lbs. Dimensions: 17"Hx8.9"Wx18.4"D. Has HD15 (PC Style) Video out. We will install a NEW Digital 120GB Hard Drive in place of the refurb 40 for +$90 Call. Add a New DVD SuperDrive +$60. Our $359.77 includes your domestic shipping. Call for upgrades. Sell us or let us repair your old unit. Call or email.


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

 Stock Number: G4-450DUAL0

Unit Price: $359.77

Qty: