Not criticizing, or yelling, Just commenting! So please don't take offense! This is a 5160 clone, not a 5150. The 5150 only has 5 expansion slots. Specifically, this is one of the many Turbo V20 boards that came out in the mid to late 1980's. The copyright date on the CPU is 1984, but the production date appears to be 1987. The 256K ram chips also have a 1987 date code. On the power supply connectors, you just need to remember that the black wires go in towards the center on both connectors. The notes on top of the HDD are how many cylinders and heads it has for the low level format program on the drive controller, not a failure map. A previous owner just wrote them there.. The XT BIOS is unlike the AT bios. You almost certainly WILL NOT be able to hook an EGA monitor to a flat panel. Some older 16 bit VGA cards will work just fine in an 8 bit slot. You will need to change the motherboard settings if you do. Also, this machine has never had a PCI card in it. I know what you're trying to say, but this machine uses 8 bit XT bus or the retroactively renamed ISA cards. There are no "PCI card blanks". Sorry, that just twitched my "incorrect nomenclature" button. If I had to guess, this machine was likely built in early, mid 1987 and upgraded by the dealer at the time of sale with the hard drive and the extra RAM in late 1987 or 1988. The hard drive is probably NOT the original, which would likely have been an Seagate ST series. Also, the $5 replacement power supply is likely not the original rating. 63 watts is the original rating for a PC, but it's marginal once you add any upgrades like a hard drive or other cards. These machines are either very exciting or terribly boring to do archaeology on. this is one that's pretty typical and was likely not used after probably the early 90's, since many of them were often upgraded with a 286 or 386SX board around that time frame..
