Firewall Throughput: Not published by Ubiquiti; 5 Gbps IDS/IPS-secured routing throughput is the only headline figure (reviewer and retailer listings)
Threat Prevention Throughput: 5 Gbps IDS/IPS
IPsec VPN Throughput: Not published
Max Sessions: Not published; 500+ simultaneous users and 4,000-entry MAC address table
New Sessions/sec: Not published
Interfaces: 2x 10G SFP+; 1x 10GbE RJ45 (10G/2.5G/1G); 4x 2.5GbE RJ45 (2.5G/1G/100M/10M); 2 of the 6 WAN-capable ports are default WAN (1x 10G SFP+ and 1x 10GbE RJ45), with the other ports selectable as WAN
Form Factor: Compact desktop; 212.8 x 127.6 x 30 mm; 675 g without SSD
CPU / RAM: Quad-core ARM Cortex-A73 at 2.2 GHz / 3 GB RAM
Storage: Optional NVMe SSD up to 2 TB (NVR storage)
PoE Budget: 30W total from one PoE+ port (port 4)
Max Power Consumption: 29.4W excluding PoE output
Curation Review
✔ Pros:Lowest-cost Ubiquiti gateway with 5 Gbps IDS/IPS, rated above the UDM-SE's 3.5 Gbps at a lower launch price ($279 MSRP vs. $499); Multi-gig flexibility with 10GBASE-T, dual SFP+ and four 2.5GbE ports; Compact desktop design with optional NVMe storage for UniFi Protect/NVR use; Supports site-to-site VPN plus OpenVPN, WireGuard and L2TP server functions, with integrated PoE+ for one device; Managed through the UniFi Network controller with 500+ simultaneous user capacity
✘ Cons:No official routing, IPsec or WireGuard throughput figures published by Ubiquiti; community WireGuard numbers (around 400-500 Mbps) are unverified; Only one PoE+ output port (30W total) versus eight PoE ports on the UDM-SE; Lower device and user capacity and less storage expansion than the UDM-SE; No published IPsec tunnel or concurrent session limits; Reseller prices now often run above the launch MSRP (about $320-$346 USD at US resellers)
Max Sessions: 100K concurrent firewall connections (ASA); 30K concurrent sessions with AVC (FTD)
New Sessions/sec: 80K new connections per second (ASA); 6K new connections per second with AVC (FTD)
Interfaces: 4x 1000BASE-T (RJ-45) + 1x 1G SFP fixed data ports, plus 1x 1000BASE-T management port; no network modules; max 5 data ports
Form Factor: Compact fanless desktop unit, 1 RU rack-mountable with accessory, wall-mount option; 1.15 in x 9.2 in x 7.8 in, 2.6 lb
Curation Review
✔ Pros:Fanless, silent operation (0 dBA) suited to branch offices and small desks; Compact footprint with rack and wall-mount options; Low power draw (12.7 W typical, 19 W max) on a single external 30W AC supply; Supports both ASA and Threat Defense (FTD) software images via separate SKUs (CSF220-ASA-K9, CSF220-TD-K9); Active/Standby high availability and up to 5 VRF instances on FTD; Built-in 4x 1GbE copper plus 1G SFP for flexible uplinks; Broad price point for a Cisco-branded next-generation firewall; MTBF rated at 700,000 hours
✘ Cons:Throughput is limited to about 1.5 Gbps with threat prevention enabled, so it does not suit multi-gigabit WAN links; Only 1G interfaces, with no 10G SFP+ option listed on the official datasheet; No clustering or multi-instance support, which limits scale-out; No redundant power supply; Maximum 50 VPN peers and 30K concurrent sessions with AVC on FTD are modest for larger sites; Software image is fixed per SKU (ASA or FTD), so switching platforms requires a different appliance; Official datasheet does not publish a USD list price, so pricing depends on reseller quotes