NEC PC-9801RA2 with 3MB RAM and Copro 387 1 of 10

NEC PC-9801RA2 with 3MB RAM and Copro 387

NEC Computer PC-9801RA21

¥7,300 🔥 Great Deal! Buy on Yahoo JP

Asking Price 11h ago
Listed 2026-07-19 沖縄県, JP
From listing #516571: NEC PC-9801RA2 main unit + 3MB expansion RAM board + copro 387
View Listing
NEC PC-9801RA2 personal computer. Includes 3MB of expanded RAM and a 387 coprocessor. The seller has replaced parts of the power supply unit and the motherboard secondary battery (maintains 3.7V after 1 week unpowered). The FDD has had the head shielding removed to allow 2DD/2HD 5-inch floppy compatibility. The IODATA PIO-RA34-3M expansion is recognized in 386 mode, bringing total memory to 4MB. Note: Keyboard, monitor, cables, and software are NOT included.
Modifications: Expanded RAM (3MB), Copro 387 installed, FDD head shielding removed for 2HD/2DD compatibility, Power supply parts replaced, Motherboard battery replaced.
Item Details
Brand: NEC
Item Type: Computer
Computer Model: PC-9801RA21 (1988)
Cosmetic condition: Fair - Noticeable wear, scratches, but complete
Functional condition: Powers On - Turns on but not fully tested
Comes With
NEC PC-9801RA21 - Computer Market Overview

Based on 16 sold computers, one should expect to pay ~$64 for a working unit. However, this unit's condition (Fair / Powers On) brings its guide price to $75.
This item ($49) is 1.5x below the guide price (~$75).

Price Position — Fair / Powers On (3 sales)
$9 Median $100 $108
This item: $49
Price by Condition
Refurbished Fully Working Partially Working Powers On Untested Not Working For Parts
New ~$599 $845(1) ~$479 $434(1)
Mint ~$493 ~$422 ~$369 ~$317 ~$345 ~$295 ~$394 ~$338
Excellent ~$248 $734(1) ~$225 $141(1) ~$169 ~$145 ~$158 ~$135 ~$180 ~$154 ~$79 ~$68 ~$56 ~$48
Good ~$155 $188(2) ~$141 $121(81) ~$106 $78(2) ~$99 $40(66) ~$113 $42(52) $26 (1) ~$49 $27(15) ~$35 $32(4)
Fair $137 (1) $142(4) $74 (3) ~$106 $97(85) ~$79 $32(3) THIS ITEM $100 (3) ~$73 $48(138) $49 (3) ~$85 $40(148) ~$37 $59(1) ~$27 $44(9)
Poor ~$77 $121(15) ~$58 $27(5) ~$55 $40(69) $62 (5) ~$62 $37(99) ~$27 ~$23 ~$20 $34(8)
$X (N) — Median sold price (N sales) ~$X — Guide price This item $X (N) — PC-98 (platform)
Guide prices based on 16 sales, Good/Fully Working baseline ~$140. Click a cell to browse matching listings.
Compare to PC-98 platform aggregate:
Recently Sold Software for PC-9801RA21 View All