Ortek compact series

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Ortek compact series
Neotec MCK-89S -- top, angled.jpg
Branding Various
Manufacturer Ortek
Layouts Various 75%
Keyswitches Alps SKCM White
Alps SKBM White
alps.tw Type T1
Dimensions 324 × 170 × 32 mm

Ortek compact series is a provisional name for a well-known series of 75% keyboards from Ortek.


Model Layout Connector Switches DA-15 Notes
Ortek MKB-84 SX[1] 84-key, ISO enter Alps SKCM White Present
Ortek MKB-84 FX[2] 84-key, ISO enter Four-tab clone Present FCC ID misprinted as "GM8MCK-84KBPD"
SIIG Suntouch Jr.[3] 84-key, ISO enter Alps SKCM White Present Model K84Jr.; FCC ID misprinted as "GM8CK-84KBPAD";
same as the MKB-84 SX, above
Ortek MCK-84FX 85-key, ISO alps.tw Type T1[4]

Four-tab clone[5]

Present Found with a health warning sticker dated 1996[5]
Ortek MCK-84SX[5] 85-key, ISO Alps SKBM White Rear label says "MCK-84", while the product box says "MCK-84SX";
product bears health warning sticker dated 1997
Ortek MCK-84FT Using product box as evidence of existence[6]
Ortek MCK-84[7] 86-key, ISO enter, Windows/menu keys PS/2 Alps clone Absent Found with a health warning sticker dated 1999[6]
Filco FKB-86E[8] 86-key, ISO enter, Windows/menu keys PS/2 DOS/V support; same as MCK-84 above
Neotec MCK-89S[9] 89-key Japanese PS/2[10] Alps SKBM White Absent Non-standard key stagger to accommodate extra key
Filco FKB89J[11] 89-key Japanese PS/2 DOS/V support; same as Neotec MCK-89S above


DA-15 connector

Many of these keyboards feature a DA-15 socket on the rear at the right; this socket directly exposes traces of the keyboard matrix to allow for the connection of a numeric keypad.[12] The matching keypad is a variant of the Ortek MCK-18 series.

Disconnected key

The 85-key ISO version of the MCK-84 can be found with the key next to left shift unprinted. In such cases, the switch may be found deliberately disconnected from the matrix by way of one of the switch legs being bent back against the base of the switch.[12]


Evidence to date suggests that Ortek used "SX" to denote the models with genuine Alps switches (complicated or simplified), and "FX" to denote the models with Alps clones. The meaning of "FT" remains to be determined. (In the case of the Neotec MCK-89S, it seems that "S" was used instead of "SX".)

Some keyboards omit the "SX" or "FX" from the model number, using only the label on the box to indicate the version.[6]