> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/hardware-products/hardware/petroleum-devices/c18-r2/c18-r2-installation-guide/device-overview.md). # Device Overview The Verifone® C18 R2 is a high-performance, reliable POS terminal that supports peripherals such as scanners, cash drawers, and PIN pads. When used with the Verifone Commander™ Site Controller, it supports payment network access, fuel dispenser and car wash control, and fast-food transactions. It accepts and processes cash, cheques, credit/debit cards, coupons, and various prepaid cards. Some C18 R2 features may not be used by all software versions. The C18 R2 uses an x86 processor and runs a customized Linux operating system with a 5.15 kernel. It features an 18.5-inch, 16:9 color touchscreen that can tilt up/down and rotate between portrait and landscape orientations. Where supported, the display can flip toward the customer for self-service operation and includes a cashier-facing camera. Its touch interface provides easy, responsive operation, with online help available for user assistance. The C18 R2, including its touchscreen, is configured through the Commander™ Configuration Manager and can operate in single- or multiple-workstation environments. It uses the Commander Site Server for efficient operation and supports thermal receipt and journal printers for transaction and sales tracking, along with on-screen receipts for viewing current transactions. Where no intranet infrastructure is available, an Ethernet router or network switch is required to connect the C18 R2 to the Commander Site Server, enabling it to: * Connect to peripherals such as fuel dispensers, dispenser card readers (DCRs), and car wash controllers. * Perform on-site maintenance, including backups, upgrades, restores, and software-version reversions. * Connect to the Verifone Technical Support Center for software downloads and diagnostics. * Support remote configuration through Internet protocols, including a web browser interface. ## Pre-requisites ### Authorized Installation The Commander Site Controller and C18 R2 must be installed by a Verifone Authorized Service Contractor (VASC). ### Software The C18 R2 requires Commander Site Controller Software Suite Base 55 or later. ## Hardware Requirements * Commander Site Server * C18 R2 * Thermal receipt printer * Network infrastructure, including an intranet, cable/DSL Ethernet router, or network connection. The required number of network switch ports depends on the number of C18 R2s. ## Cable Requirements * Ethernet cable from each C18 R2 to the network switch and/or router. * Additional Ethernet cable from the network switch to the router, if a switch is used. * RS-232 cables for connecting peripherals, such as printers. * Null Modem Adapter. ## Recommended Equipment * Uninterruptible Power Supply (UPS): Verifone recommends a UPS rated at 250 VA or higher for the C18 R2. * Keyboard * Cash drawer * PIN pad * Scanner * Printer --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.verifone.com/hardware-products/hardware/petroleum-devices/c18-r2/c18-r2-installation-guide/device-overview.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.