. Ethernet: 2x RJ45. 2nd display VGA port: 1x DB15. Audio port: 1x Line out; 1x Line in; 1x MIC-in. USB: 4x USB 2.0. PS2 keyboard/ mouse. Power switch. Reset button. COM #1: RS232/422/485 w/RI or 5V selection. COM #2: RS232/422/485 w/RI or 12V selection. DIO w/ 2.5kv isolated:4x Digital Input (Source type)- Input Voltage (Dry Contact): Logic 0: Close to GND- Logic 1: Open- Input Voltage: Logic 0: 3V max- Logic 1: +5V ~ +30V4x Digital Output (Sink type)- Output Voltage: 3.6V ~ 5V- Sink current: 200 mA max. per channel. GPIO: 2x digital in/ 2x digital out (Optional). COM #1: RS232/422/485 w/ 2.5kv isolated. COM #2: RS232/422/485 w/ 2.5kv isolated. COM #3: RS232 w/ RI or 5V selection(Optional). COM #4: RS232 w/ RI or 12V selection(Optional)Audio. AC97 codec: Realtek ALC886-GR. Audio interface: Line out/Line in/MIC-in Audio JackEthernet. LAN chip: dual Intel® 82574L Gigabit LAN. Ethernet interface: 10/100/1000 Based-Tx Ethernet compatibleMechanical & Environment. Color: pantone black\RAL 15 00 front bezel w/ Pantone400C\RAL 090 80 10 metal style membrane. IP protection: IP65 front. Mounting: panel/ wall/ stand/ VESA 100mm x 100mm. Power input: 12V~ 30V DC. Power adapter: Optional AC to DC power adaptor (+12V, 60W). Vibration:- IEC 68 2-64 (w/ HDD)- 1Grms @ sine, 5~500Hz, 1hr/axis (HDD Operating)- 2Grms @ sine, 5~500Hz, 1hr/axis (CFast Operating)- 2.2Grms @ random condition, 5~500Hz, 0.5hr/axis (Nonoperating). Shock:- IEC 68 2-27- HDD: 20G@wall mount, half sine, 11ms. Operating temperature: -5°C to 50°C. Storage temperature: -20°C to 75°C. Operating humidity: 10%~90% relative humidity, non-condensingLimits to be at 90% RH at max 50°C. Dimension: 410.4 x 340.4 x75.79 mm. Weight: 6.5 KgCertifications. CE approval. FCC Class AKnowing AcuPanel 19Rear TopAntenna holes for optional 4G/ WiFi/ BluetoothThe 3 external antenna holes are used to mount and connectoptional 4G/ WiFi/ Bluetooth antennas.CFast Card Socket Used to insert a CFast card.3 4