I2C Isolator, both sides use SIPSIK(tm) style connector, fully symmetrical, safe to reverse: GND - sig - VCC - sig - GND
UD = Universal Digital Card, SD or microSD form factor, but not bound to license agreement from SDA organization. On the foto AT45 footprint has been adapter to 25 style SPI flash.
USB UART Adapter that fits into Fiber optical SFP gage, no molded housing, all done with PCB technology alone. About 10 pieces made, some are still in use in FPGA board development process.
Based on Xilinx CPLD fits into regular game cartridge, single sided PCB, 2 Sipsik(tm) I/O Extension slots at front. CPLD reprogramming done from homebrew applications directly using SVF Player.
STAMP style board featuring Silicon Blue (now Lattice) ice65 FPGA, on the foto soldered to CRUVI(tm) base board