Dear customer, please note that items QNAP TL-R1620Sep-RP expansion storage 16 Bay Hot-swappable 3U Rackmount 4 x 12Gb/s SAS 3.0 wide ports are currently listed as pre-order/on order. You can continue to place a backorder and it will ensure earliest allocation when these products are available. Our team will contact you to notify the expected ETA. Thank you.