37X MICR
Compatible HP 37X MICR Black High Yield Toner Cartridge (CF237X)
25,000 pages
$199.98
HP LaserJet Enterprise Flow MFP M631h toner
Your LaserJet Enterprise Flow MFP M631h takes the 37X MICR (high yield) and 37A MICR (standard yield). At our price that is about 0.8¢ a page.
The HP LaserJet Enterprise Flow MFP M631h is a mono laser printer in the LaserJet Enterprise Flow MFP M631 series, which shares cartridges across 1 models.
It takes two black cartridges that differ only in capacity: the 37A MICR at about 11,000 pages and the 37X MICR at about 25,000. At our prices that is 1.5¢ a page against 0.8¢, so the high-yield cartridge costs less to run unless you print very little.
On this printer the drum is built into the cartridge, so there is no separate drum to buy or reset. Every new cartridge brings a fresh drum with it.
When you compare prices, compare cost per page rather than the sticker price: a cheaper cartridge with half the rated yield costs more to run. Every cartridge here ships free, is covered by our printer damage protection and can be returned within 90 days, opened or not.
Cartridges that fit
Which yield is worth it
| Cartridge | Yield | Price | Per page |
|---|---|---|---|
| 37X MICR High yield | 25,000 pages | $199.98 | 0.8¢ |
| 37A MICR | 11,000 pages | $169.98 | 1.5¢ |
What it costs you a month
About $9.66 a month in toner, roughly one 37X MICR every 3 months.
Questions about the LaserJet Enterprise Flow MFP M631h
What toner does the HP LaserJet Enterprise Flow MFP M631h use?
The 37X MICR and 37A MICR. HP lists these cartridges as compatible with this model, and the yields on this page are HP's published figures.
Does using a compatible cartridge void the LaserJet Enterprise Flow MFP M631h warranty?
No. Under the Magnuson-Moss Warranty Act a manufacturer cannot void your warranty because you used a third-party cartridge. If one of ours damages the printer, our printer damage protection covers the repair.
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Page updated Sep 23, 2026. Compatibility checked by Dan Whitaker, Print Technician. Brand names and part numbers are used only to identify compatibility. We are not affiliated with or endorsed by any printer manufacturer.