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SCSI2SD emulates a SCSI-2 hard drive. Each SCSI2SD purchase includes a fully assembled and tested circuit board, ready for use.

SCSI2SD 3.5" 50-pin SCSI to SD Card Adaptor

Model: IM150402001

Availability: In stock

This is an improved version of the popular SCSI2SD. It's smaller, uses less power, and can be powered by the SCSI bus in some cases.

Please contact us for special pricing on bulk buying.


Product Description



This is an improved version of the popular SCSI2SD. It's smaller, less power consumption, and can be powered by the SCSI bus in some cases.

SCSI2SD emulates a SCSI-2 hard drive using a micro-SD memory card. Each SCSI2SD includes a fully assembled and tested circuit board, ready for use.

A SCSI2SD package does NOT include the followings:

  • Micro-SD memory card
  • Bracket for mounting within a 3.5" drive bay.
  • SCSI cables, power cables, usb cables, or any other accessory

Please visit the SCSI2SD page at http://www.codesrc.com/mediawiki/index.php?title=SCSI2SD, where you will find the GPL3+ software source code.

The hardware design for this new board is not currently open source.



  • In-built active terminator.
  • Emulates up to 4 SCSI devices
  • Supports sector sizes from 64 bytes to 8192 bytes
  • Firmware updatable over USB
  • Highly configurable over USB
    • Selectable SCSI ID
    • Selectable parity support
    • Enable/disable Unit Attention Condition
    • Artificial limits on the SCSI disk size (eg. limit size to 4G to avoid OS bugs)
    • Sector size (can also be set via the SCSI MODE SELECT command, as sent by SCSI format utilities).
  • External LED connector.

Technical Specifications

SCSI Interface SCSI-2 Narrow 8-bit 50-pin connector. Supports asynchronous transfers only.
SD Card Interface Standard SDSC (1GB maximum size)



5V via standard molex drive connector, USB, or SCSI BUS powered (requires the SCSI host to supply terminator power)

Dimensions 10cm x 5cm x 2cm


Computer systems

  • Mac LC-III and LC-475
  • Mac II running System 6.0.8
  • Mac SE/30
  • Apple IIgs using Apple II High Speed SCSI controller card (from v3.3)
  • Symbolics Lisp Machine XL1200, using 1280 byte sectors (from v3.4)
  • PDP-11/73 running RSX11M+ V4.6
  • Microvax 3100 Model 80 running VMS 7.3 (from v3.6)
  • Commodore Amiga 500+ with GVP A530
  • Commodore Amiga 500 KS 1.3 with Oktagon 508 SCSI-2 controller
  • Amiga 2000 (B2000 rev 6.4 ECS) with DKB RapidFire SCSI 1 card
    • May require bootloader replacement if it only starts up while on USB power.
  • Amiga 3000
    • May require bootloader replacement if it only starts up while on USB power.
  • Amiga 4000 equipped with CyberStorm PPC using 68pin adapter.
  • Atari TT030 System V
  • Atari TT running TOS 3.06 with HDDRIVER software version 9.06
  • Atari Mega ST 1; TOS 1.04; Protar ProFile 30 external hard drive enclosure (1GB size limitation)
  • Atari MEGA STE
    • needs J3 TERMPWR jumper
    • 1GB limit (--blocks=2048000). The OS will fail to read the boot sector if the disk is >= 1GB.
  • Atari Falcon, TOS 4.02, HDDRIVER 9.06 driver
  • Sharp X68000
    • SASI models supported. See gamesx.com for information on building a custom cable.
    • needs J3 TERMPWR jumper
    • Set to SCSI ID 3. ID0 will not work.
  • Compaq XP-1000 Professional Workstation
    • Alpha 21264 CPU, 667MHz, with a QLogic SCSI controller in a PCI slot
  • SCSI-based Macintosh Powerbooks (2.5" SCSI2SD)
  • AT&T 3B2/600
  • Sun 2/120 Workstation (Unit Attention disabled)
  • Sun 4/50 workstation
  • Data General MV/2500DC running AOS/VS
    • Requires changing deviceTypeModifier to 0x4c in XML config file. Configurable deviceTypeModifier is supported from firmware v4.3.
  • Applix 1616
  • IMS MM/1
  • NeXTcube + NeXTSTEP 3.3
  • NeXTStation
    • Modified geometry settings are required to avoid "cylinder group too large" errors while formatting. Configurable geometry is supported from firmware v4.3
  • Apollo 400/425s running DOMAIN/OS
  • Motorola System V/68 R3V7 and R3V8.
    • Since the installation have information about limited number of drives(most of them with custom commands) it requires a pre-installed disk image to be dd-ed on it. Works with MVME167 and MVME177
  • Motorola System V/88 R40V4.0 through R40V4.4
  • BBC micro/Master with Akhter host adapter


  • Roland JS-30 Sampler
  • Roland VS2480
  • Roland S-760, S-770
  • Akai S950
  • Akai S1000, S3200, S3000XL, MPC 2000XL, DPS 12
    • SCSI cable reversed on S3200
    • There are compatibility problems with the Akai MPC3000. It works (slowly) with the alternate Vailixi OS with multi-sector transfers disabled.
  • EMU Emulator E4X with EOS 3.00b and E6400 (classic) with Eos 4.01
  • EMU E6400 w/ EOS2.80f
  • EMU Emax1, Emax 2
  • Ensoniq ASR-X, ASR-10 (from v3.4, 2GB size limit)
    • ASR-10 Requires TERMPWR jumper (applies to pre. 5.0 SCSI2SD boards only)
    • ASR-X resets when writing to devices > 2Gb.
  • Ensoniq EPS16+
  • Kurzweil K2000R
    • See kurzweil.com for size limits which a dependant on the OS version. Older OS versions have a 1GB limit.
    • SCSI cable reversed
  • Kurzweil K2500XS
  • Casio FZ-20M
    • Requires TERMPWR jumper. The manual shows the pin25 of the DB25 connector is "not connected".
    • May require scsi2sd-config --apple flag
  • Yamaha A5000, A3000, EX5, EX5R
  • EMU ESI4000 [1] [2]
  • Synclavier 9600.
    • Disable Parity. Max size == 9GB.
  • Waveframe 1000
    • Max size = 16GB


To get technical support, please leave a comment below.

Additional Information

Additional Information

Discontinued No
Link Wiki No
EWeLink Support No
Module Type No
Weight 50 g
Model IM150402001
Board Size 10cm x 10cm x 1.5cm
Version V5.0α
Operation Level Digital 5V


Customer Reviews

This works great with the Sharp X68000 Review by Wesley
I got this to use with the Sharp X68000, and it works great! Thanks for making such a great product!
(Posted on 8/22/2016)

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