In addition to supporting ISA bus accessible via PC/104 interface, 3.5 in. Model GENE-A55E supports 2x RS232 and 2x RS232/422/485 COM ports, DDR3L 1066 SODIMM RAM up to 4 GB, and optimized Ethernet hardware for 10/100/1000Base x2 connection speeds. Fanless design emits almost no sound and vibration during operation. Legacy support includes 5 V power supply, use of CompactFlash card, and support for all Windows® operating systems since Windows® CE 6.0.