ADATA could have designed its PCI Express-based solid-state drive as an add-in card, the sort you place in those desktop motherboard slots everyone knows about. That's not what happened though.
Instead, the storage device maker chose mobile formats, the sort that will best serve laptops and ultrabooks (and compact servers too I guess).
Thus, its PCI Express-based SSDs, with transfer speeds three times as good as over SATA 6.0 Gbps, will come in M.2 Next Generation Form Factor (NGFF) as well as 2.5-inch size.
Sadly, ADATA didn't give numbers. Its SATA drive works at up to 550 MB/s though, so maybe we can actually hope for $1,500+ MB/s here.
Anyway, the SSDs possess Enhanced Error Correction with LDPC, AHCI and NVMe support, and self-encryption.
More info will be released at the LSI Accelerating Innovation Summit (November 20-21).