4 Installation4.8 External connectionsXP-503 04/2020 MN048014 EN Eaton.com 294.8 External connections The external interfaces described below can be accessed on the back of the device, atthe bottom of the housing.4.8.1 Ethernet connectionsTwo Ethernet connections, each with its own RJ45 port. The Ethernet controllers support transferrates of 10 Mbit/s, 100 Mbit/s, and 1 Gbit/s. Configuration for the 10 Mbit/s and 100 Mbit/s operating modesRJ 45 socket8-pole, 2 LEDs(CAT5e/6)Pin Signal Description Input/Output1 TxD + Transmit + O2 TxD – Transmit – O3 RxD + Receive + I4 N.C. not used ---5 N.C. not used ---6 RxD – Receive – I7 N.C. not used ---8 N.C. not used ---LED yellow LinkLED green ActivityTab. 3 Ethernet [10/100 Base-T] Pinout for the 1000 Mbit/s operating modeRJ 45 socket8-pole, 2 LEDs(CAT5e/6)Pin Signal Description Input/Output1 DB + Bi-directional data B + I/O2 DB – Bi-directional data B – I/O3 DA + Bi-directional data A + I/O4 DD + Bi-directional data D + I/O5 DD – Bi-directional data D – I/O6 DA – Bi-directional data A – I/O7 DC + Bi-directional data C + I/O8 DC – Bi-directional data C – I/OLED yellow LinkLED green ActivityTab. 4 Ethernet [1000 Base-T] 2 x Ethernet4.8.2 USB connectionsTwo 9-pole USB ports, Type A, for connecting USB peripherals.