TS-932PX-4G-US - TS-932PX 5 (+4) Bay 64-bit NAS with Hardware Encryption, Quad Core 1.7GHz, 4GB RAM, 2 x 10GbE(SFP+) LAN ,2 x 2. - SMB - iComTech
TS-453U (4GB RAM) - QNAP 4-Bay NAS 4gb
QNAP TS-464 4-Bay NAS with 4GB RAM, 500GB (2 x 250GB) NVME Cache, and – Customtechsales
QNAP TS-433 4-Bay NAS 4 Core 2.0GHZ 4GB RAM and 48TB (4 x 12TB) of Western Digital Red Plus Drives Fully Assembled and Tested By CustomTechSales Desktop NAS - Newegg.com
Synology DS923+ Dual-Core 4-Bay NAS, 4GB RAM, 48TB (4 x 12TB) of Western Digital Red Plus Drives, and 800GB (2 x 400GB) of Synology Cache Fully Assembled and Tested By CustomTechSales Desktop
QNAP TS-653D-4G NAS Server Storage System | AVADirect
TS-453Be-4G-US QNAP | 4 bay NAS Network Attached Storage | Unisol
Amazon.com: QNAP TS-433-4G-US 4 Bay NAS with Quad-core Processor, 4 GB DDR4 RAM and 2.5GbE Network (Diskless) : Electronics
QNAP TS-464 4-Bay NAS with 4GB RAM and 8TB (4 x 2TB) of Seagate Ironwolf NAS Drives Fully Assembled and Tested By CustomTechSales Rackmount NAS - Newegg.com
A-Tech 4GB RAM Compatible for Synology NAS RackStation RS2416RP+, RS2416+, RS815RP+, RS815+ | DDR3/DDR3L 1600MHz PC3L-12800 Non-ECC Unbuffered SODIMM Memory (Replacement for RAM1600DDR3-4G) at Amazon.com
QNAP TS-431X3-4G 4-Bay ARM-based NAS
Synology NAS Storage RackStation RS815+ Atom C2538 2.4GHz CPU 4GB RAM, 489,00 €