www. m oxa. com Power Computers > DA-681A Series Power Computers 21-16 21 Comparison of DA-Series Models Model Name Serial Ports Giga LAN Port Storage Expansion System Power Relay IEC 61850-3 IEEE/1613 IEC 60255 3-in-1 RS-485 SATA mSATA USB PCI-104 (for IRIG-B) OS RAM mSATA DA-681A-I-SP 2 10 6 1 1 4 – – – – 1 – – DA-681A-I-SP-LX 2 10 6 1 1 4 – Linux 2G 8G 1 – – DA-681A-I-DPP 2 10 6 1 1 4 1 – – – 2 1 P DA-681A-I-DPP-LX 2 10 6 1 1 4 1 Linux 2G 8G 2 1 P DA-681A-I-DPP-T 2 10 6 1 1 4 1 – – – 2 1 P DA-681A-I-DPP-T-LX 2 10 6 1 1 4 1 Linux 2G 8G 2 1 P Optional Accessories Model Name Expansion Module Accessory DA-IRIGB-4DIO-PCI104-EMC4 USB Dongle DA-681A HDD Kit DA-681A-I-SP –   DA-681A-I-SP-LX –   DA-681A-I-DPP    DA-681A-I-DPP-LX    DA-681A-I-DPP-T    DA-681A-I-DPP-T-LX    Expansion Modules (can be purchased separately) Model Description DA-IRIGB-4DIO-PCI104-EMC4 Time-synchronization expansion module, 1 IRIG-B signal input port, 3 digital inputs, 4 digital outputs (DA-681A-I-DPP series only) Optional Accessories (can be purchased separately) Model Description DA-681A HDD Kit HDD/SSD installation package, supports single HDD/SSD. USB Dongle Kit USB dongle kit installation package. This kit can be installed inside the DA-681A and is suited for security applications. For example, the license activate USB dongle for SCADA or the backup image storage for Smart Recovery.