ZuluSCSI Compact RP2040 uses a microSD card socket, is pre-flashed with firmware, and hand-tested.

ZuluSCSI is a new generation of file-based SCSI HDD & CD-ROM emulators, and represents a fusion of SCSI2SD V5, V6, and concepts from other open source SCSI emulators. Hard drive and CD-ROM drive images are stored on a standard FAT32 or exFAT-formatted SD card. The ZuluSCSI firmware looks for file names which adhere to a simple but powerful naming convention, and presents them as the drives to the SCSI host. Each image file represents a SCSI drive. ZuluSCSI Compact RP2040 board dimensions are 90mm by 60mm

Features - Emulates up to 7 SCSI devices simultaneously, including CD-ROM - Speaks both SCSI-1 and SCSI-2 - SCSI termination is enabled/disabled by a two-pin jumper header. The jumper is installed by default. - SCSI Initiator mode can be enabled by installing a two-pin jumper header on the appropriate jumper header, and closing/shorting the jumper at power-on. - Firmware upgrade simplicity; As easy as placing a file on the SD card. - Highly configurable using a text-based ini file, zuluscsi.ini - External LED pin header for attaching remote LEDs. - Designed to be powered via SCSI termination power, when provided by the host - Optional DB25 pin header for direct installation of an external SCSI connector, in addition to the Single-Ended 50 pin IDC connector - SCSI bus transceivers