The desktop CPU on module offers customer higher computing power but lower cost comparing to mobile solutions. PCOM-B655VGL supports both ECC and Non-ECC DDR4 by different PCH SKUs(Q470E/W480E), which can be adapted to different applications. This module provides one PCIex16, eight PCIex1 (Option to one PCIex4), four USB 3.1 Gen2, and four SATA III.