"The ASRock Q2900M is a microATX motherboard that comes with a Pentium J2900 "Bay Trail-D" quad-core CPU soldered on it. It has one USB 3.0 and two SATA-300 ports, but its highlights are actually its low power consumption and low cost."
Link: http://www.hardwaresecrets.com/article/ASRock-Q2900M-Motherboard/1897