PoE Switches- 8× 10GBASE-T
- 120 W Class 6
- 2× SFP+
HPE Networking · PoE Switches
S4A29A – HPE Networking Instant On Switch 8p Gigabit CL6 PoE 2p SFP 124W 1940
Eight-port fan-less Layer 2+ switch with Class 6 PoE on every port, a 124 W budget and two 1G SFP uplinks.
PricingContact for Best Price
- Ports
- 8× GbE Class 6 PoE (ports 1–8)
- Uplinks
- 2× 1G SFP (ports 9–10)
- PoE budget
- 124 W
- Per-port PoE
- Up to 60 W (Class 6)
- Switching capacity
- 20 Gbps
- Cooling
- Fan-less
- Ready Stock
- PAN India Supply
- Same Day Dispatch*
- GST Billing
- BOQ Assistance
*Same-day dispatch applies to in-stock items ordered before cut-off from the Delhi NCR warehouse.
Key Features
What the S4A29A is built to do
Technical Specifications
S4A29A specifications
Specifications as published for this model. Confirm project-critical values against the datasheet before ordering.
| Ports | |
|---|---|
| PoE ports | 8× RJ-45 autosensing 10/100/1000BASE-T with IEEE 802.3af/at/bt Class 6 PoE (ports 1–8) |
| Uplink | 2× SFP 1GbE ports (ports 9–10) |
| Standards | IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T |
| Duplex | 10BASE-T/100BASE-TX: half or full; 1000BASE-T: full only |
| Console port | 1× USB-C console port |
| PoE | |
|---|---|
| Total PoE budget | 124 W Class 6 PoE |
| Per-port maximum | Up to 60 W (IEEE 802.3bt Class 6) |
| Standards | IEEE 802.3af / 802.3at / 802.3bt |
| Scheduling | PoE scheduling via global schedules (up to 3) |
| Performance | |
|---|---|
| Switching capacity | 20 Gbps |
| Throughput | 14.88 Mpps @ 64-byte packets |
| Latency (100 Mb, LIFO) | < 10.3 µs |
| Latency (1000 Mb, LIFO) | < 5.8 µs |
| MTBF | 99 years |
| Scale | |
|---|---|
| MAC address table | 16,000 entries |
| Maximum VLANs | 256 (VLAN IDs 1–4093) |
| IPv4 host table (ARP) | 509 entries |
| IPv4 unicast static routes | 32 |
| Routing table | 32 IPv4 static entries |
| IGMP groups | 1K |
| IPv4/MAC ACL entries (ingress) | 100 |
| Maximum ACEs | 2048 |
| Jumbo frames | Up to 9216 bytes |
| IPv4/MAC ACL entries (egress) | Unsupported |
| Link aggregation groups | 8 (4 members per group) |
| Processor and Memory | |
|---|---|
| Processor | ARM Cortex-A9 @ 1.2 GHz |
| SDRAM | 1 GB |
| Flash | 512 MB |
| Packet buffer | 0.5 MB |
| Physical | |
|---|---|
| Dimensions (D × W × H) | 11.65 × 11.61 × 1.73 in (29.60 × 29.50 × 4.40 cm) |
| Weight | 4.80 lb (2.18 kg) |
| Fans | Fan-less |
| Primary airflow | Not applicable |
| Acoustics | Not rated |
| Mounting | EIA-standard 19 in. rack or cabinet (2-post kit included); table-top; rack; wall; under-table |
| Electrical | |
|---|---|
| Power supply type | Internal power supply |
| AC voltage | 100–127 VAC / 200–240 VAC |
| Frequency | 50 Hz / 60 Hz |
| Current | 1.49 / 0.75 A |
| Power consumption (100% traffic) | 100–127 V: 13.8 W; 200–220 V: 13.1 W |
| Power consumption (100% traffic + 100% PoE) | 100–127 V: 149.0 W; 200–220 V: 146.3 W |
| Power consumption (idle) | 100–127 V: 10.2 W; 200–220 V: 10.0 W |
| Heat dissipation (100% traffic + 100% PoE) | 100–127 V: 508.4 BTU/hr, 536.4 kJ/hr; 200–220 V: 499.0 BTU/hr, 526.5 kJ/hr |
| Environment | |
|---|---|
| Operating temperature | 32 °F to 104 °F (0 °C to 40 °C) |
| Storage temperature | −40 °F to 158 °F (−40 °C to 70 °C) |
| Operating humidity | 15% to 95% @ 104 °F (40 °C), non-condensing |
| Storage humidity | 15% to 95% @ 140 °F (60 °C), non-condensing |
| Altitude | Up to 10,000 ft (3 km) |
| Layer 2 Switching | |
|---|---|
| Spanning tree | 802.1D STP, 802.1w RSTP, 802.1s MSTP (local web only, up to 8 instances), BPDU filtering, loop protection |
| Flow control | IEEE 802.3x, symmetric and asymmetric |
| Link aggregation | LACP or static, up to 16 LAGs with up to 8 ports each depending on model |
| Multicast | IGMP v1, v2, v3 snooping |
| Discovery | LLDP and LLDP-MED |
| Monitoring | Port mirroring and RSPAN |
| Auto VLAN | Auto-detects access points and cameras into pre-defined VLANs |
| Auto recovery | Returns a port or service online after an error condition |
| Layer 3 Routing | |
|---|---|
| Static IPv4 routing | Up to 32 IPv4 routing interfaces and 32 IPv4 static routes |
| Address assignment | Manual or DHCP, per port or per VLAN |
| ARP | Dynamic and manual entries |
| IPv6 | IPv6 Host mode |
| Quality of Service | |
|---|---|
| Classification | CoS by IEEE 802.1p or DSCP; Global Trust Mode |
| Queue scheduling | Weighted round robin (WRR) or strict priority (SP) |
| Traffic shaping | Per-port egress bandwidth limit |
| Rate limiting | Broadcast, multicast and unicast thresholds with port shutdown or SNMP trap |
| Auto-voice VLAN | Detects SIP, H.323 and SCCP or by OUI |
| Security | |
|---|---|
| Hardware root of trust | TPM 2.0 |
| Port authentication | IEEE 802.1X |
| AAA | RADIUS, TACACS+ or local database |
| RADIUS servers | Up to 2, with RADIUS-assigned dynamic VLANs and accounting |
| DoS protection | Automatic denial-of-service protection |
| Access control | ACLs with MAC and IP filtering; time-based ACLs |
| Management | |
|---|---|
| Options | Instant On Cloud Portal; Mobile App; Web Browser; SNMP Manager; DOCs (Telnet, SSH); Console Port (USB-C) |
| Local web sessions | Up to 5 HTTP / HTTPS |
| Devices per site | Up to 125 |
| Scheduling | Up to 3 global schedules for ACLs, port shutdown or PoE |
| Diagnostics | Event logging and alerts, locator LED, port mirroring |
| Supported Transceivers (1G SFP) | |
|---|---|
| S0G20A | Instant On 1G LX SFP LC 10 km SMF transceiver |
| R9D16A | Instant On 1G SFP LC SX 500 m OM2 MMF transceiver |
| R9D17A / R9D17B | Instant On 1G SFP RJ45 100 m Cat5e transceiver |
| Compliance & Warranty | |
|---|---|
| Safety | EN/IEC 62368-1 2nd & 3rd Ed.; UL 62368-1 3rd Ed.; CAN/CSA C22.2 No. 62368-1 3rd Ed.; EN/IEC 60825-1:2014 Class 1 |
| Emissions | EN 55032:2015/CISPR 32 Class A; FCC CFR 47 Part 15:2018 Class A; ICES-003 Class A; VCCI-32 Class A; CNS 13438 Class A; KS C 9832 Class A; AS/NZS CISPR 32 Class A |
| Immunity | BS/EN 55035, CISPR 35, KS C 9835; IEC 61000-4-2/-3/-4/-5/-6/-8/-11 |
| Warranty | HPE Networking Instant On limited lifetime; chat support for the life of the product |
Specifications sourced from the official HPE Networking catalogue. Where official pages disagree on a value, it is marked and confirmed during quotation.
Overview
About the S4A29A
The HPE Networking Instant On Switch 8p Gigabit CL6 PoE 2p SFP 124W 1940 (S4A29A) is an eight-port smart-managed Layer 2+ gigabit switch in which every access port supplies IEEE 802.3af/at/bt Class 6 PoE within a 124 W budget, alongside two dedicated 1G SFP uplink ports.
Class 6 is what separates it from the 1840 generation: where the older series tops out at Class 4 and 30 W per port, Class 6 carries up to 60 W, which covers pan-tilt-zoom cameras, multi-radio Wi-Fi 6E and Wi-Fi 7 access points, and powered door controllers that a Class 4 switch cannot drive.
It is the only fan-less model in the series and the smallest at 29.60 × 29.50 × 4.40 cm and 2.18 kg, so it suits an occupied room rather than a rack. Switching capacity is 20 Gbps with 14.88 Mpps forwarding, and it carries the full 1940 feature set — 256 VLANs, IPv4 static routing, ACLs, 802.1X and a USB-C console port.
Applications
Where the S4A29A is deployed
Downloads
S4A29A documents
Datasheets and manuals are shared without sign-up. Documents not yet hosted online are sent on request within working hours.
- HPE Networking Instant On Switch Series 1940 QuickSpecs (PDF)Download
Related Products
Pairs with the S4A29A
Edge PoE switches below it, SFP+ modules in its uplinks, and sibling models for smaller or larger sites.
- PoE Switches
PoE Switches- 24× GbE PoE
- 240 W budget
- 4× SFP+
PoE Switches- 8× GbE PoE
- 124 W budget
- 2× SFP
Before You Enquire
Frequently asked questions
What is Class 6 PoE and why does it matter on the S4A29A?
Class 6 is an IEEE 802.3bt power class delivering up to 60 W per port, double the 30 W ceiling of Class 4. On the S4A29A every one of the eight access ports supports it, which is what allows PTZ cameras, tri-band Wi-Fi 7 access points and powered door controllers to run without a separate injector.
How many devices can the 124 W budget power?
124 W across eight ports averages 15.5 W per port. Two devices drawing the full 60 W would consume most of the budget, so the practical mix is a small number of high-draw endpoints plus several lower-draw ones. LLDP allocation grants each port only what it requests.
Does the S4A29A have a fan?
No. It is the only fan-less model in the Series 1940, which makes it the one to specify for offices, meeting rooms and retail counters where the switch sits in the room it serves.
S4A29A or S4A36A — which 8-port 1940 should I choose?
The S4A29A gives eight gigabit Class 6 PoE ports, a 124 W budget and 1G SFP uplinks, fan-less. The S4A36A gives eight multi-gigabit ports up to 10GBASE-T with Class 6 PoE on four of them, a 120 W budget and 10G SFP+ uplinks, with one fan. Choose by port speed: gigabit versus multi-gig.
Compare the S4A36AWhat is the price of the HPE S4A29A in India?
Pricing is quotation-based with dealer slabs for registered partners. Name the S4A29A and quantity in a quote request and you receive priced options with confirmed availability within 24 working hours.
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