I was looking at this deal and the coupon can still be applied.
- POWERFUL HARDWARE: Apollo Quad-core 1.5GHz CPU, 4GB of RAM (expandable up to 8GB).
- 1x10GbE RJ45 port, blazingly fast speed of 670MB/s reading and 650MB/s writing. Dual 1GbE LAN with failover and Link Aggregation support.
- AES hardware encryption engine encrypts shared folders and network data transmission to keep data from unauthorized access.
- Advanced Btrfs file system offering 71,680 system-wide snapshots and 1,024 snapshots per shared folder; Real-time hardware transcoding of up to two concurrent 4K video streaming.
- Features an aluminum-alloy shell and intelligent temperature control ultra-quiet fan, good in heat dissipation.
I beleive these are good for running TrueNAS, so an option for a really solid NAS OS that should have good support for quite some time to come.