Acrosser AR-ES6003FL - Manual (Page 67)

6.6 Serial ATA (SATA)
There are 2 SATA 2.5 ports on the AR-B6003. There are also two SATA power
connectors for the SATA hard disks. The SATA power cable is an optional
accessory. If you need a SATA power connector, please contact your Acrosser
sales representative for the quotation.
6.7 USB
There are 6 USB 2.0 interfaces on the AR-B6003. Four USB connectors are
located on the edge of the board. The other two USB ports are supported by
two 5 pin internal connector. You need a special cable for using these two USB
ports and they are optional accessories.
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