FEATURES: • MAX3232CDR chip by Texas Instruments • UEXT connector and a ribbon cable • RS232 DB-9 connector • RX-TX singal swap via SMD jumpers • FR-4, 1.5 mm, red soldermask, white component print • Tiny size: PCB dimensions - 26 x 26 mm (1 x 1"); Nominal dimensions - 33 x 26(1.3 x 1)"