This cartridge PCB lets you use MMC/SD cards as a removable storage medium for your PCjr and can even replace a hard drive!
Starting from $45.00
(Approx. $35.55 US dollars)
Update your SD-Cart JR with this new boot ROM which supports the use of other hard drives on the system, such as a jr-IDE.
(Approx. $7.90 US dollars)