Note: probably many PC-98xx models share a common BIOS, but we need either to find specific documents or to access dumps to verify.

• TK80 (1976)
• TK80E (1977)
• TK80BS (1978)
• Compo-BS/80 (1979)
• TK85 (1980)

• PC-6001 (1981)
• PC-6001 mkII (1983)
• PC-6001 mkII SR (1984)

• PC-6601 (1983) - high-end model of PC-6001 mkII
• PC-6601 SR (1984) - high-end model of PC-6001 mkII SR

• PC-8001 (1979/09/28)
• PC-8001 mkII (1983/03)
• PC-8001 mkII SR (1985/01)

• PC-8801 (1981)
• PC-8801 mkII (1983) - 3 models: 10 (no FDD), 20 (1xFDD), 30 (2xFDD)
• PC-8801 mkII TR (1985) - same as SR + modem
• PC-8801 mkII FR (1985)
• PC-8801 mkII MR (1985)
• PC-8801 FH (1986)
• PC-8801 MH (1986)
• PC-88 VA (1987)
• PC-8801 FA (1987)
• PC-8801 MA (1987)
• PC-88 VA2 (1988)
• PC-88 VA3 (1988)
• PC-8801 FE (1988)
• PC-8801 MA2 (1988)
• PC-8801 FE2 (1989)
• PC-8801 MC (1989) - with CD-ROM

• PC-9801F (1983)
• PC-9801E (1983)
• PC-9801M (1984)

• PC-9801U (1984)
• PC-9801VF (1985)
• PC-9801VM (1985)
• PC-9801UV (1986)
• PC-9801CV (1988)

• PC-9801VX (1986)
• PC-9801UX (1987)
• PC-9801 RA2/RX2 (1988)
• PC-9801 RA21/RS21/RX21 (1989)
• PC-9801 ES/EX (1989)
• PC-9801 DA/DS/DX (1990)
• PC-9801 UR/UF (1991)
• PC-9801 CS (1991)
• PC-9801 US (1992)
• PC-9801 FA/FS/FX (1992)

• PC-9801 BX/BA (1993)
• PC-9801 BX2/BS2/BA2 (1994)
• PC-9801 BX3/BA3 (1995)
• PC-9801BX4 (1995)

• PC-9801LV (1988) - laptop
• PC-9801LS (1988) - laptop
• PC-9801LX (1989) - laptop
• PC-9801T (1990)
• PC-9801N (1989) - aka 98NOTE
• PC-9801NS (1990) - aka 98NOTE
• PC-9801NS/E (1991) - aka 98NOTE
• PC-9801NC (1991) - aka 98NOTE
• PC-9801NA (1992) - aka 98NOTE
• PC-9801P (1993) - aka 98PEN, uses pen input
• RC-9801 (showed in 1991, unreleased?) - wireless laptop?

• PC-98XA (1985)
• PC-98XL (1986)
• PC-98XL2 (1987) - correct name PC-98XL²
• PC-98RL (1989)
• PC-98LT (1987) - laptop
• PC-98HA (1990) - aka HANDY98, laptop
• PC-98DO (1989) - can switch between PC-8800 and PC-9800 compatibility
• PC-98DO+ (1990) - can switch between PC-8800 and PC-9800 compatibility
• PC-98GS (1991) - with CD-ROM
• PC-H98 (1990→1992) - various models
• PC-H98S (1991)
• PC-H98T (1992) - similar to PC-9801T
• OP-98/H (1991→1993) - various models, for office use
• SV-H98 (1991→1993) - for server use

• PC-9821 (1992) - aka 98MULTi, desktop computer, 386 based
• PC-9821A series (1993→1994) - aka 98MATE A, desktop computers, 486 based
• PC-9821B series (1993) - aka 98MATE B, desktop computers, 486 based
• PC-9821C series (1993→1996) - aka 98MULTi CanBe, desktop & tower computers, various CPU
• PC-9821Es (1994) - aka 98FINE, desktop computer with integrated LCD, successor of the PC-98T
• PC-9821X series (1994→1995) - aka 98MATE X, desktop computers, Pentium based
• PC-9821V series (1995) - aka 98MATE Valuestar, desktop computers, Pentium based
• PC-9821S series (1995→2996) - aka 98Pro, tower computers, PentiumPro based
• PC-9821R series (1996→2000) - aka 98MATE R, desktop & tower & server computers, various CPU
• PC-9821C200 (1997) - aka CEREB, desktop computer, Pentium MMX based
• PC-9821 Ne/Ns/Np/Nm (1993→1995) - aka 98NOTE, laptops, 486 based
• PC-9821 Na/Nb/Nw (1995→1997) - aka 98NOTE Lavie, laptops, Pentium based
• PC-9821 Lt/Ld (1995) - aka 98NOTE Light, laptops, 486 based
• PC-9821 La/Ls (1995→1997) - aka 98NOTE Aile, laptops, Pentium based

• NWP-20 (1980)
• VWP-100 (1982) - voice word processor
• PWP-30 series (1985→1986)
• PWP-50 / PWP-5S / PWP-5Z series (1985→1986)
• PWP-70 / PWP-7S series (1985→1986)
• HWP-7A / HWP-7HA / HWP-7FA series
• JX series (1995→1999)
• Ardata CA-1000T / CA-2000T (1996→1997)
• NWP-N series
• NWP-V / NWP-VII / NWP-VIIEX series
• NWP-M / NWP-MII series
• N5820 DP series - DP stands for Document Processor

• N5200 series (1981→199x) - plenty of models with different architectures
• PC-100 (1983)
• APC - US version of first N5200 models
• APC III - US version of PC-9801?
• PC 8201A - portable computer similar to Tandy Model 100
• PC 8401A - aka Startlet, portable computer
• PC-8300 - upgrade of the PC-8201a
• PC-8500
• PC-98NX series (post 1997) - PC/AT compatible computers
• FC-9800 / FC-H98 / FC-9821 series - factory computers, replaced from 2002 by FC-98NX.
• FC-98NX series - factory computers based on PC-98NX technology
• PC-FXGA
• PC-2001 (1982) - the only pocket computer manufactured by NEC
• Pocket Gear series - PocketPC PDAs
• Mobile Gear MC-P / MC-MP series - PDAs, custom OS with MSDOS, touchpad
• Mobile Gear MC-K / MC-MK series - PDAs, custom OS with MSDOS, keyboard
• Mobile Gear MC-CS series - PDAs, WinCE based, keyboard
• Mobile Gear MC-R series - aka MC/R, aka Mobile Gear II, PDAs, WinCE based, keyboard