Data cable for Siemens S40/S42, RS-232 serial, zero modem adapter, #K-205-10 | eBay
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DELOCK 86615: Zero modem cable, RS-232, connector - socket with nuts, 1 m at reichelt elektronik
DIGITUS by ASSMANN Shop | Zero-Modem Connection Cable
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DIGITUS by ASSMANN Shop | Zero-Modem Connection Cable