1PC UPR-112 USB to COM printer adapter Parallel Port Serial + USB Hub

1PC Keyspan UPR-112 USB to COM printer adapter Parallel Port Serial + USB Hub

1PC UPR-112 USB to COM printer adapter Parallel Port Serial + USB Hub

1PC Keyspan UPR-112 USB to COM printer adapter Parallel Port Serial + USB Hub

UPR-112 USB to Serial Parallel Adapter with USB Hub for Printers ScannersR S232

1PC Keyspan UPR-112 USB to COM printer adapter Parallel Port Serial + USB Hub

1x DB9 Serial Cable for HP48 Environmental Case (HP 48GX 48SX 48G+ 48G 48S) USA

2PCS DC 12V 24V 8ch IO Digital Collector USB COM Serial Port UART Relay Module