Epson C31CK50021 vs Epson C31CK00A9991: Specification Comparison
Both the Epson TM-m30III (C31CK50021) and the Epson TM-P80II (C31CK00A9991) are 3-inch direct thermal receipt printers sharing 203 dpi resolution and thermal paper media — making them genuine cross-shop candidates for POS deployments. The key differentiator is deployment context: the TM-m30III is a fixed countertop unit with multi-interface networking, while the TM-P80II is a battery-powered mobile printer designed for cordless, on-the-go receipt printing. Buyers choosing between them are weighing stationary high-throughput operation against portability and untethered mobility.
In This Guide
- Which printer delivers faster throughput for high-volume receipt printing?
- How do connectivity options and deployment form factor differ between these two models?
- How do power delivery and physical form factor affect installation and operational flexibility?
- Which should you choose: the C31CK50021 or the C31CK00A9991?
- Side-by-Side Specs
- FAQ
Which printer delivers faster throughput for high-volume receipt printing?
The TM-m30III (C31CK50021) is rated at 708.7 inches per minute (ipm) — exactly three times the 236.2 ipm rated speed of the TM-P80II (C31CK00A9991). In practical terms, the TM-m30III's spec sheet cites sub-2-second receipts, making it suited for high-volume checkout lanes in retail and hospitality environments where queue speed is critical.
The TM-P80II's 236.2 ipm figure is consistent with mobile-class thermal printers, which prioritize battery longevity and portability over peak throughput. For low-to-medium transaction volumes — tableside ordering, mobile event ticketing, delivery confirmation — 236.2 ipm is operationally adequate. Buyers with sustained peak-hour line loads should note the nearly 3× speed gap between these two models.
How do connectivity options and deployment form factor differ between these two models?
The TM-m30III (C31CK50021) offers a broad wired and wireless interface set: USB, USB-C, Ethernet, Wi-Fi, and Bluetooth 5.0 dual-mode. An optional dual Wi-Fi/Bluetooth adapter (OT-WL06) is also listed. Wall, column, and rack mounting options are specified, confirming this is a fixed-installation unit designed to integrate into structured network environments. Its Ethernet port enables direct IP-addressable deployment on wired LAN infrastructure.
The TM-P80II (C31CK00A9991) lists Bluetooth and wired connectivity, with a battery cradle supporting cordless operation. No Ethernet or Wi-Fi interface is specified for this model. This positions it exclusively for mobile or semi-permanent deployments where cable-free operation — paired to a tablet, phone, or handheld terminal via Bluetooth — is the primary use case. Fixed network integration is not documented in the provided specs.
How do power delivery and physical form factor affect installation and operational flexibility?
The TM-m30III (C31CK50021) is powered by an external AC adapter (PS-190) and weighs 2.87 lb (1,300 g). Its compact countertop footprint, combined with wall/column/rack mount options, supports permanent front-of-house installation. Available in Epson White (ENB9) and Epson Black (EBCK), it is suited to retail aesthetics where a stationary unit is acceptable.
The TM-P80II (C31CK00A9991) is powered by a battery cradle, enabling fully cordless operation — a requirement for roving staff, outdoor events, or table-service scenarios. The spec listing does not provide a weight figure for this model. No AC-only dependency means the P80II can operate in environments without convenient power outlet access, at the cost of requiring battery management and charging logistics that the mains-powered TM-m30III does not.
Which should you choose: the C31CK50021 or the C31CK00A9991?
Our take: The C31CK50021 (TM-m30III) is the stronger choice when throughput, network integration, and fixed-installation reliability are the primary requirements. It prints at 708.7 ipm — 3× the TM-P80II's 236.2 ipm — and supports Ethernet, Wi-Fi, Bluetooth 5.0, USB, and USB-C simultaneously, enabling flexible wired or wireless network deployment. Its PS-190 AC adapter and 1,300 g chassis are purpose-built for permanent countertop or rack-mounted installations. The C31CK00A9991 (TM-P80II) is the correct choice when cordless mobility is non-negotiable: its battery cradle enables untethered operation that the AC-dependent TM-m30III cannot provide. Both units share 3-inch print width, 203 dpi resolution, direct thermal technology, and a 1-year warranty. Choose the TM-m30III for fixed high-volume POS; choose the TM-P80II for mobile or roving staff deployments.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Epson C31CK50021 | Epson C31CK00A9991 |
|---|---|---|
| Product Name | TM-m30III | TM-P80II |
| SKU | C31CK50021 | C31CK00A9991 |
| Product Type | Receipt Printer (Fixed) | Receipt Printer (Mobile) |
| Print Method | Direct Thermal | Direct Thermal |
| Print Speed | 708.7 ipm | 236.2 ipm |
| Print Width | 3 inches (80mm) | 3 inches |
| Print Resolution | 203 dpi | 203 dpi |
| Paper Width | 3" | 3" |
| Media Type | Thermal receipt paper | Receipt rolls |
| Connectivity | USB, USB-C, Ethernet, Wi-Fi, Bluetooth | Bluetooth, Wired |
| Bluetooth Version | 5.0 dual-mode | — |
| Ethernet | Yes | — |
| Wi-Fi | Yes (optional dual adapter OT-WL06) | — |
| Power Source | AC adapter (PS-190) | Battery cradle (cordless) |
| Weight | 2.87 lb / 1,300 g | — |
| Mount Options | Wall, Column, Rack | — |
| Color Options | Epson White (ENB9), Epson Black (EBCK) | — |
| Warranty | 1-year | 1-year |
Frequently Asked Questions
Which should you choose: the C31CK50021 or the C31CK00A9991?
The C31CK50021 (TM-m30III) is the stronger choice when throughput, network integration, and fixed-installation reliability are the primary requirements. It prints at 708.7 ipm — 3× the TM-P80II's 236.2 ipm — and supports Ethernet, Wi-Fi, Bluetooth 5.0, USB, and USB-C simultaneously, enabling flexible wired or wireless network deployment. Its PS-190 AC adapter and 1,300 g chassis are purpose-built for permanent countertop or rack-mounted installations. The C31CK00A9991 (TM-P80II) is the correct choice when cordless mobility is non-negotiable: its battery cradle enables untethered operation that the AC-dependent TM-m30III cannot provide. Both units share 3-inch print width, 203 dpi resolution, direct thermal technology, and a 1-year warranty. Choose the TM-m30III for fixed high-volume POS; choose the TM-P80II for mobile or roving staff deployments.
Is the C31CK50021 or C31CK00A9991 better for a busy retail checkout counter?
The C31CK50021 (TM-m30III) is better suited for busy fixed checkout environments. Its 708.7 ipm print speed is nearly 3× faster than the TM-P80II's 236.2 ipm, and it supports Ethernet for stable wired network connectivity alongside Wi-Fi and Bluetooth. The TM-P80II is a mobile printer and does not list Ethernet or Wi-Fi — it is not designed for permanent countertop, high-throughput use.
Can the C31CK00A9991 operate without being plugged into a wall outlet?
Yes. The TM-P80II (C31CK00A9991) is specified with a battery cradle for cordless operation, meaning it does not require a continuous AC power connection during use. The TM-m30III (C31CK50021) requires the PS-190 AC adapter and has no battery option listed in its specifications.
Do both printers connect via Bluetooth, and is the Bluetooth version specified for both?
Both printers list Bluetooth as a connectivity option. However, the Bluetooth version is only specified for the TM-m30III (C31CK50021), which uses Bluetooth 5.0 dual-mode. The TM-P80II (C31CK00A9991) lists Bluetooth connectivity but no version number is provided in the supplied specifications.
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