What is the NovaStar 10G SFP Module-M?
If a 10G optical port on your converter or controller has stopped passing light, the NovaStar 10G SFP Module-M is the part that goes back into it. It is the multimode optical transceiver that turns your electrical data into 850 nm light and back, and it is what decides whether your port speaks multimode or single-mode.
You are buying a spare here, not an addition to your system. NovaStar fits optical modules at the factory in the CVT10, CVT10 Pro and CVT4K converters, so a new converter arrives ready to patch. This page is for the day one fails, for a travelling rig that needs a shelf spare, or for an optical port left empty.
The letter on the end of the name matters more than anything else on your order. A multimode module will not light a single-mode link, and both ends of your fiber run have to carry the same type.
10G SFP Module-M key points
A dead module is a small part, not a dead converter
From the front of your rack, a port that has stopped passing light looks exactly like a failed chassis. That is how working converters end up in repair boxes. NovaStar documents these modules as hot-swappable in the CVT10, CVT10 Pro and CVT4K ports. You pull the module, fit the spare, and your link comes back without the converter moving.
Multimode means 850 nm and OM3 or OM4 fiber
If you order by port shape, the wrong module turns up, because the single-mode part looks identical and seats just as well. This is the 850 nm build for OM3 or OM4 twin-core fiber with a 50/125 µm core on LC connectors. Its documented reach in a NovaStar converter is 300 m.
One spare covers both ends of the link
A converter at each end of your fiber run means two modules of the same type, and they fail at the same rate. One shelf spare serves either position, which is why it is worth carrying even when your system holds only a single converter pair.
10G SFP Module-M specifications
Your module has to match the fiber already on site, so the fiber row below doubles as your cable order. These are the figures NovaStar publishes for the multimode optical module in its 10G converter ports.
| Type | Multimode optical module for a 10G optical port |
|---|---|
| Wavelength | 850 nm |
| Transmission rate | 9.95 Gbit/s to 11.3 Gbit/s |
| Transmission distance | 300 m |
| Fiber | OM3 or OM4 multimode twin-core, 50/125 µm core |
| Connector | LC |
| Insertion loss | ≤ 0.2 dB |
| Return loss | ≥ 45 dB |
| Hot swap | Supported in the CVT10, CVT10 Pro and CVT4K optical ports |
NovaStar publishes these values inside the specification of each host device rather than as a separate module datasheet, so it is worth checking them against the exact converter or controller the module is going into.
Which devices take a 10G multimode module
If your device has a 10G optical port on the multimode side of a link, this module fits it. The table lists the ones NovaStar documents with modules in this band.
| Device | Optical ports | Modules fitted from the factory |
|---|---|---|
| CVT10-M and CVT10 Pro-M | 2 × 10G | Yes, both ports |
| CVT4K-M | 4 × 10G, two working and two backup | Yes, all four |
| VX1000 and VX1000 Pro | 2 × 10G OPT | Offered with a multimode or a single-mode module |
| MCTRL660 Pro | 2 × 10G OPT | Offered with a multimode or a single-mode module |
| MX_4 10G Fiber Output Card-M | 4 × 10G SFP+ | Yes, four supplied with the card |
The third column is the one to look at before you order. Most of these arrive populated, so a module order is usually a spare or a replacement rather than a missing part.
Two families do not take this module at all. The CVT8-5GM uses a 40G module on an MPO connector, and NovaStar’s ST 2110 input cards call for SFP28 or QSFP28 transceivers. Neither is a 10G SFP, so nothing on this page will fit them.
M or S: how to be sure before ordering
You read the M or the S off the device, not off the port. Your two options share the LC connector and the same cage, so a look at them tells you nothing useful.
Three things settle it, and they have to agree. Your converter or controller model carries the letter in its own name, your installed fiber is either OM3 or OM4 multimode or OS1 or OS2 single-mode, and the equipment at the far end of your run carries the same letter as this end.
If the fiber in your building is single-mode, order the 10G SFP Module-S instead. It is the 1310 nm build for a 9/125 µm core, and it reaches 10 km rather than 300 m.
If you are building a link from nothing, settle the fiber first and let it choose your modules. Fiber is the part that gets buried, and the part nobody wants to pull twice.
When you need a 10G SFP Module-M
You buy a 10G SFP Module-M for a reason rather than as part of a first order, because your converters arrive with their optical ports already populated. Four reasons come up.
One rule covers all four. Your spare has to carry the same letter as the converter it goes into, because a multimode module cannot light a single-mode link.
If your equipment runs single-mode fiber, hold the 10G SFP Module-S instead. It is the 1310 nm build for a 9/125 µm core.
Where to find the 10G SFP Module-M datasheet, manual or specifications
The 10G SFP Module-M has no datasheet of its own, so your figures come from the CVT10 specification, which covers the multimode and single-mode builds together. Your wavelength, reach and fiber grade all come from there when you order the cable.
NovaStar 10G SFP Module-M FAQ
Is this a fiber converter?
No, this is the optical module that plugs into a port on your fiber converter or controller. The converter is the chassis with the Ethernet ports on it.
Does a new CVT10-M need one?
No, your new CVT10-M arrives with modules in both optical ports, fitted by NovaStar at the factory. You order this one as a spare or as a replacement for a module that has failed.
How far will it reach?
It reaches 300 m on OM3 or OM4 multimode fiber at 850 nm, in a NovaStar 10G converter port.
Can a Module-M face a Module-S across a link?
No, a Module-M cannot face a Module-S across a link. One is 850 nm multimode and the other 1310 nm single-mode, so the pair will not pass light. Both ends of your run carry the same letter.
Will it fit a CVT8-5GM?
No, it will not fit a CVT8-5GM. That converter uses a 40G module on an MPO connector, which is a different class of optic entirely.
Can it be changed with the converter powered?
Yes, you can change one with the converter powered, because NovaStar documents the optical modules in the CVT10, CVT10 Pro and CVT4K ports as hot-swappable.
What fiber and connector does it need?
Your run needs OM3 or OM4 multimode twin-core with a 50/125 µm core on LC connectors, with insertion loss of 0.2 dB or better.
How many spares are worth carrying?
One spare per system covers either end of your link, since both ends take the same part. If your rig travels, one per flight case is usually justified.
What warranty covers a 10G SFP Module-M?
Your warranty is three years of serial-tracked manufacturer coverage, because these come through our authorized US NovaStar channel.
Can I get volume pricing or Net 30 terms?
Yes, volume pricing applies from the quantity you send us, because spares are usually ordered in small multiples. Purchase orders and Net 30 terms may be available for approved schools, government buyers, venues and established integrators.
How do I order a 10G SFP Module-M?
You order a 10G SFP Module-M at the listed price, per module. Confirm your host device model and installed fiber type first, because those decide the letter. Orders placed before 3 PM ET on in-stock items ship the same business day. Contact us to confirm current availability.
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