Zombie Components LLC Sylmar, California Dell System 486P 486P

Dell System 486P system board with its matching Dell 3-slot ISA riser card. LPX form

factor, Dell Computer Corporation, copyright 1991. An Intel i486SX-20 processor is

installed under the heatsink and one 72-pin SIMM is fitted in socket S1. The board was

photographed running its own BIOS Setup utility, both screens, where BIOS A07 reports

Microprocessor i486SX-20, Total Memory 4096 KB, Video Memory 512 KB and no system

password set. Sold as a board level assembly. This is not a complete computer.

Condition

60 Day Money Back Guarantee. Powered on, POSTs and enters BIOS Setup; BIOS A07 reports i486SX-20, 4096 KB total memory, 512 KB video memory.

Details and highlights

• Board POSTs and reaches BIOS Setup, both screens photographed.
• CPU present and identified by BIOS as i486SX-20; heatsink fitted.
• 4 MB installed, 3 of 4 SIMM sockets free, 64 MB maximum.
• Matching Dell proprietary ISA riser included; these are hard to source separately.
• External battery pack included, and the board shows no battery corrosion.
• No system password set, so the board is not locked out.
• Full onboard I/O present: VGA (WD90C30-LR), 2 serial, parallel, PS/2 keyboard and mouse.
• IDE and diskette headers.
• All large ICs present, none desoldered or socket-robbed.

Specifications ParameterValue MPN486PBrandDell Computer CorporationModelSystem 486P system boardForm factorLPX, board approximately 13.7 x 7.3 in (349 x 185 mm)Processor installedIntel i486SX-20, 20 MHz, 8 KB internal cacheFamily processor optionsi486SX-16/-20/-25, i487SX, i486DX-33, IntelDX2-50 and -66, IntelDX4 OverDriveMemory reported by BIOS4096 KB totalMemory sockets4, 36-bit 72-pin SIMM, 1 MB, 4 MB and 16 MB modules, 64 MB maximumMemory architecturepage mode 4-way interleaved, 80 ns tRAC, 20 ns tCACVideoWestern Digital WD90C30-LR onboard, 512 KB standard, upgradable to 1 MB, 1024 x 768 at 512 KB, 1280 x 1024 at 1 MBChipsetVLSI VL82C330, VL82C331, VL82C332, VL82C106 with ACC Micro 3201BIOS versionA07Expansion3 ISA 16-bit slots on the included Dell riser cardBus8 MHz I/O bus, 16-bit data width, 7 DMA channels, 15 interrupt levelsSerial UART16450External portsPS/2 keyboard 6-pin mini-DIN, PS/2 mouse 6-pin mini-DIN, VGA DB-15, two serial DB-9, one parallel DB-25Internal headersIDE 40-pin, diskette 34-pin, 26-pin video feature connectorPower inputAT style 6-pin P8 plus 6-pin P9Backup battery specified by DellRayovac 844, 4.5 V alkalineQuantity1 Included

Dell System 486P system board with i486SX-20 and heatsink installedOne 72-pin SIMM installed in socket S1Dell 3-slot 16-bit ISA riser cardExternal battery pack module on a two wire lead

Not included:
Chassis, cover, power supply, drive bays and mounting hardware
Diskette drive, hard drive, drive cables and I/O cables
Keyboard, mouse, monitor, power cord
Expansion cards, math coprocessor, video RAM upgrade
Software, diskettes, documentation

Compatibility and requirements

Requires an AT style power supply with P8 and P9 connectors. The riser card is proprietary

to the Dell LPX chassis, and expansion cards install horizontally into the riser. The board

is drilled for a Dell low profile chassis, so a standard AT or ATX case will not line up

without custom standoffs. Memory must be 36-bit 72-pin SIMMs of 1 MB, 4 MB or 16 MB;

30-pin SIMMs and 32-bit parity-free modules are not supported. The diskette header supports

two diskette drives, or one diskette drive and one tape drive. The system supports one

internal hard disk drive. Video output is the onboard VGA DB-15.

Quality control

Where possible, electronics are tested. The value of an item determines the effort put into testing; items not specifically tested in detail are visually inspected and reviewed for operational status. Any exceptional wear is noted in the description. Most items are covered by a money-back guarantee.

Shipping

Box 15 x 15 x 7 in, ship weight 4 lb. Ships double boxed, board bagged in antistatic and

suspended in foam, riser packed separately. Ships from Sylmar, California.

Orders may take up to 3 business days to ship from payment; weekends are not counted. If you need faster service, contact us before ordering so we can adjust priorities. We reserve the right to change the selected shipping method to an equivalent or better service that fits the item.

We ship worldwide. USPS may not be an acceptable choice for international shipping due to size, weight, and export documentation restrictions; you may be asked to select FedEx, UPS, or DHL at a higher price. Confirm your shipping choice with us before ordering if in doubt.

International shipments may be delayed or cancelled due to EAR and ITAR export compliance requirements. The vast majority of our items need no export license and ship under EAR99 and other exemptions; items that require a license are indicated in the listing.

Returns, warranty, and money-back guarantee

This listing carries a 60 day money back guarantee: return your purchase for any reason within 60 days for a full refund or exchange. Returned items must be in the condition received and in the original packaging.

All items are guaranteed to be as described. Any item not as described can be returned at our expense for a full refund, regardless of any as-is marking.

If you are dissatisfied for any reason, contact us first and give us a chance to work things out; if we cannot fix it, you receive 100% of your purchase price back.

Data privacy

We do not keep or share your information anywhere. Your information resides only on and is available to us only for a limited time while we interact with you on an inquiry, order, or return, per usage policies.

Zombie Components LLC · Sylmar, California