QSFP28-SR4-100G 100GBASE-SR4 QSFP28 Transceiver — MPO-12, 850nm MMF, Refurbished
Warranty: Lifetime
100GBASE-SR4 — parallel MMF / MPO-12, not duplex LC CWDM4/LR4
QSFP28-SR4-100G — 100G SR4 QSFP28 transceiver, refurbished
Part Number: QSFP28-SR4-100G
Common aliases: 100G-SR4 · QSFP-100G-SR4 · 100GBASE-SR4
Description: Hot-pluggable QSFP28, 100GbE over parallel multimode fiber, MPO-12, 850 nm
This is a refurbished 100GBASE-SR4 QSFP28 module — four 25G lanes at 850 nm over an MPO-12 ribbon for short-reach data-center links. Zoho inventory carries this PID without a single OEM brand claim, so we list it as an MSA SR4 optic — verify coding against your platform matrix before you cut over production fabrics. It is not CWDM4 or LR4 (those are duplex LC SMF).
Lifetime warranty from Resilient Tec.
Which One Do I Need?
| Going into | You need |
|---|---|
| 100G QSFP28 port, parallel OM3/OM4 with MPO-12, short reach | QSFP28-SR4-100G — this product |
| Cisco-coded 100G SR4 specifically | Cisco QSFP-100G-SR4-S Compatible |
| Duplex SMF, ≤ 2 km | 100GQSFP28E-CW4 (CWDM4) |
| Duplex SMF, up to 10 km | 100GQSFP28E-LR4S (LR4) |
| 40G parallel MMF instead of 100G | Finisar QSFP-40G-SR4 |
SR4 vs CWDM4/LR4 is the media fork. SR4 = MPO multimode. CWDM4/LR4 = duplex LC single-mode. Same QSFP28 cage; completely different fiber plant.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | QSFP28-SR4-100G |
| Form Factor | QSFP28 (hot-pluggable) |
| Ethernet Standard | IEEE 802.3bm 100GBASE-SR4 |
| Data Rate | 100 Gbps (4 × 25.78125 Gb/s); breakout to 4×25GBASE-SR on capable hosts |
| Wavelength | 850 nm (840–860 nm) |
| Connector | MPO/MTP-12 (UPC, parallel MMF) |
| Fiber / Reach | 70 m OM3 · 100 m OM4 |
| DOM / DDM | Supported (typical) |
| Power | ~2.5–3.5 W class |
| Operating Temperature | 0°C to 70°C (commercial) |
| Standards | QSFP28 MSA, IEEE 802.3bm, SFF-8636, RoHS |
| Warranty | Lifetime, backed by Resilient Tec |
| Condition | Refurbished |
Note on Reach: OM3 70 m vs OM4 100 m
IEEE 100GBASE-SR4 rates 70 m on OM3 and 100 m on OM4. Host FEC is part of the 100G SR4 story on many platforms — confirm FEC is enabled when you design to the rated distance. Extra MPO matings quietly erase margin.
Good to Know
- No single OEM brand is claimed on this Zoho PID. Treat it as MSA 100G SR4 and verify EEPROM/coding on your switch before production.
- If you need a guaranteed Cisco-, Arista-, or NVIDIA-coded SR4, tell us — we stock brand-specific SR4 siblings separately.
- Breakout to 4×25G is host-dependent; confirm fan-out support before ordering breakout harnesses.
- Refurbished = previously deployed, tested, re-warranted by Resilient Tec.
Quick Checklist — Is This the Right Module?
You have a 100G QSFP28 cage. Your fiber is parallel OM3/OM4 with MPO-12. Runs are within 70 m (OM3) / 100 m (OM4). MSA SR4 is acceptable for your matrix. You are not ordering duplex-LC CWDM4/LR4 by mistake.
Availability
In stock at Resilient Tec · Ships from Knoxville, TN.
Need brand-coded SR4 instead? Ask and we will point you at the right sibling. Request a quote →
Warranty: lifetime, backed by Resilient Tec.
You Might Also Need
- Cisco QSFP-100G-SR4-S Compatible — 100G SR4
- 100GQSFP28E-CW4 — Arista 100G CWDM4, Refurbished
- 100GQSFP28E-LR4S — Arista 100G LR4, Refurbished
- Product guides · Request a quote
Related Guides
Lifetime warranty — how Resilient Tec backs what we sell
100GBASE-SR4 — parallel MMF / MPO-12, not duplex LC CWDM4/LR4
QSFP28-SR4-100G — 100G SR4 QSFP28 transceiver, refurbished
Part Number: QSFP28-SR4-100G
Common aliases: 100G-SR4 · QSFP-100G-SR4 · 100GBASE-SR4
Description: Hot-pluggable QSFP28, 100GbE over parallel multimode fiber, MPO-12, 850 nm
This is a refurbished 100GBASE-SR4 QSFP28 module — four 25G lanes at 850 nm over an MPO-12 ribbon for short-reach data-center links. Zoho inventory carries this PID without a single OEM brand claim, so we list it as an MSA SR4 optic — verify coding against your platform matrix before you cut over production fabrics. It is not CWDM4 or LR4 (those are duplex LC SMF).
Lifetime warranty from Resilient Tec.
Which One Do I Need?
| Going into | You need |
|---|---|
| 100G QSFP28 port, parallel OM3/OM4 with MPO-12, short reach | QSFP28-SR4-100G — this product |
| Cisco-coded 100G SR4 specifically | Cisco QSFP-100G-SR4-S Compatible |
| Duplex SMF, ≤ 2 km | 100GQSFP28E-CW4 (CWDM4) |
| Duplex SMF, up to 10 km | 100GQSFP28E-LR4S (LR4) |
| 40G parallel MMF instead of 100G | Finisar QSFP-40G-SR4 |
SR4 vs CWDM4/LR4 is the media fork. SR4 = MPO multimode. CWDM4/LR4 = duplex LC single-mode. Same QSFP28 cage; completely different fiber plant.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | QSFP28-SR4-100G |
| Form Factor | QSFP28 (hot-pluggable) |
| Ethernet Standard | IEEE 802.3bm 100GBASE-SR4 |
| Data Rate | 100 Gbps (4 × 25.78125 Gb/s); breakout to 4×25GBASE-SR on capable hosts |
| Wavelength | 850 nm (840–860 nm) |
| Connector | MPO/MTP-12 (UPC, parallel MMF) |
| Fiber / Reach | 70 m OM3 · 100 m OM4 |
| DOM / DDM | Supported (typical) |
| Power | ~2.5–3.5 W class |
| Operating Temperature | 0°C to 70°C (commercial) |
| Standards | QSFP28 MSA, IEEE 802.3bm, SFF-8636, RoHS |
| Warranty | Lifetime, backed by Resilient Tec |
| Condition | Refurbished |
Note on Reach: OM3 70 m vs OM4 100 m
IEEE 100GBASE-SR4 rates 70 m on OM3 and 100 m on OM4. Host FEC is part of the 100G SR4 story on many platforms — confirm FEC is enabled when you design to the rated distance. Extra MPO matings quietly erase margin.
Good to Know
- No single OEM brand is claimed on this Zoho PID. Treat it as MSA 100G SR4 and verify EEPROM/coding on your switch before production.
- If you need a guaranteed Cisco-, Arista-, or NVIDIA-coded SR4, tell us — we stock brand-specific SR4 siblings separately.
- Breakout to 4×25G is host-dependent; confirm fan-out support before ordering breakout harnesses.
- Refurbished = previously deployed, tested, re-warranted by Resilient Tec.
Quick Checklist — Is This the Right Module?
You have a 100G QSFP28 cage. Your fiber is parallel OM3/OM4 with MPO-12. Runs are within 70 m (OM3) / 100 m (OM4). MSA SR4 is acceptable for your matrix. You are not ordering duplex-LC CWDM4/LR4 by mistake.
Availability
In stock at Resilient Tec · Ships from Knoxville, TN.
Need brand-coded SR4 instead? Ask and we will point you at the right sibling. Request a quote →
Warranty: lifetime, backed by Resilient Tec.
You Might Also Need
- Cisco QSFP-100G-SR4-S Compatible — 100G SR4
- 100GQSFP28E-CW4 — Arista 100G CWDM4, Refurbished
- 100GQSFP28E-LR4S — Arista 100G LR4, Refurbished
- Product guides · Request a quote
Related Guides
Lifetime warranty — how Resilient Tec backs what we sell