Like the other ReadyNAS Ultra storage devices, it has three USB ports for connecting peripherals such as printer servers, and 1GB DDR2 RAM. It also has ReadyNAS Ultra network features such as streaming media to TiVo boxes, to mobile devices using Orb with on-the-fly transcoding, and to DLNA devices. It also Memeo backup for continuous backup of up to three PC or Mac computers. Unlike the ReadyNAS Ultra 6, the Ultra 4 has only a single-core processor and four hard drive bays, instead of a dual-core processor and six bays. It also cannot put drives in a RAID 6 configuration, as it does not have enough bays.