Sonnet has tested the following cards with the Drobo S:
Tempo SATA E2P..............................compatible
Tempo SATA E4P..............................not compatible
Tempo SATA ExpressCard/34...........compatible
Tempo SATA Edge ExpressCard/34...compatible
Tempo SATA Pro ExpressCard/34.....not compatible
Tempo SATA X4P..............................not compatible
Qio eSATA ports...............................not compatible
A battery should be capable of providing 12Volts @ 3 Amps and have an XLR 4-pin power connector. Nominal power usage of Qio is 9W, and attached F2s are 8 Watts each. An example of a compatible battery is the Bescor MM7XLR-NC (BC-500 charger sold separately) that can provide 12Volts @ 7.2Amps and has a 50 Watt-hour capacity. This battery could power a Qio for 5.5 hours, or a Qio plus F2 for 3 hours.