{ "ok": true, "data": { "title": "EP-0216-NEW", "rev_id": 16046, "updated_at": "2025-08-21T08:56:54+00:00", "chunk_count": 15, "chunks": [ { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "", "chunk_index": 0, "content": "# EP-0216-NEW\n\n[right\\|320px](File:EP-0216-New-01.jpg \"wikilink\")", "char_count": 65, "token_estimate": 17 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Description", "chunk_index": 1, "content": "The 52Pi 2.5Gbps PCIe Network Adapter for Raspberry Pi 5 is a PCIe-based expansion card that adds a second, full-speed 2.5 GbE port to the Pi 5. A detachable PoE+ daughter-board (pluggable via on-board headers) turns the adapter into a fully IEEE 802.3at-compliant power source: it receives PoE+ over the new RJ45 jack and simultaneously delivers up to 25 W to the Raspberry Pi 5 through a USB-C plug, eliminating the need for a separate PSU. Data still travels at native PCIe speeds over a supplied FPC cable, while GPIO pass-through pins on the base board provide the auxiliary power rails required by the on-board NIC. The result is a single, compact module that combines high-speed networking and reliable PoE+ power in one stackable solution.", "char_count": 747, "token_estimate": 187 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Features", "chunk_index": 2, "content": "- High-speed networking:<\/strong> Realtek-based 2.5 Gbps Ethernet controller (100\/1000\/2.5 G auto-negotiation)\n- Native PCIe interface: <\/strong>Dedicated PCIe Gen 2 ×1 link to Raspberry Pi 5 via flexible FPC cable\n- Optional PoE+ module:<\/strong> Pluggable board adds IEEE 802.3at (PoE+) power input and USB-C 5 V \/ 5 A output to the Pi\n- Single-cable operation: <\/strong>Network data and power delivered through one RJ45 connection\n- GPIO pass-through: <\/strong>Base-board pins must mate with Pi GPIO header to supply on-board NIC with required power\n- Compact & stackable:<\/strong> Low-profile design keeps HAT footprint, leaves remaining GPIO pins accessible\n- Plug-and-play: <\/strong>Works out of the box with recent Raspberry Pi OS kernels; no external drivers needed\n- Real-time speed LEDs: <\/strong> Four labeled LEDs (100 M, 1 G, 2.5 G) indicate current link speed for quick diagnostics", "char_count": 975, "token_estimate": 244 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Gallery > PCB outlook", "chunk_index": 3, "content": "\"EP-0216-New-04.jpg\"\n===Function details=== \"EP-0216-New-05.jpg\"\n===Product Dimension=== \"EP-0216-New-02.jpg\"", "char_count": 337, "token_estimate": 85 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Gallery > Hardware assembly", "chunk_index": 4, "content": "\"EP-0216-New-IN.jpg\"", "char_count": 96, "token_estimate": 24 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Package Includes", "chunk_index": 5, "content": "\"EP-0216-New-PL.jpg\"\n===Hardware assembly===\n\n- Power down the Pi 5.\n- Plug the 40-pin header of the 52Pi base board onto the Pi’s GPIO (this rail-powers the NIC).\n- Connect the supplied FPC ribbon between the adapter’s PCIe slot and the Pi’s PCIe FFC connector (labelled “PCIe” next to the DSI\/CSI slots).\n- If you are using the PoE+ daughter-board, seat it on the two 4-pin headers.\n\n`  – Plug a USB-C cable from the daughter-board’s USB-C PD OUT into the Pi 5’s USB-C power port.`\n`  – Plug an 802.3at\/af+ switch into the RJ45 on the daughter-board.`\n\n- Power on the PoE switch; the Pi should boot automatically.", "char_count": 701, "token_estimate": 176 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Verify PCIe enumeration", "chunk_index": 6, "content": "sudo lspci -nn | grep -i eth\n\nYou should see something like:\n\n 0001:01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)\n\n\"Poe_2.5G_001.png\"\nIf the device is missing, check that the FPC is fully seated and the GPIO header is firmly mated.", "char_count": 375, "token_estimate": 94 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Verify PCIe enumeration > Kernel driver", "chunk_index": 7, "content": "Pi OS Bookworm ships with r8169\/rtl8125 modules ≥ 9.010, so the adapter is recognised out-of-the-box. Update just in case:\n\n sudo apt update && sudo apt full-upgrade -y\n sudo reboot", "char_count": 187, "token_estimate": 47 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Interface naming & link-speed LEDs", "chunk_index": 8, "content": "The new NIC appears as eth1 (Pi’s on-board is eth0).\nThe four LEDs next to the RJ45 indicate negotiated speed in real time:\n\n- LED indicators: “100Mbps” = 100 Mbps, “1Gbps” = 1 Gbps, “2.5Gbps” = 2.5 Gbps.", "char_count": 206, "token_estimate": 52 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Interface naming & link-speed LEDs > Network configuration examples", "chunk_index": 9, "content": "- DHCP\n\n\n\n sudo nano \/etc\/dhcpcd.conf\n\nAdd at the bottom:\n\n interface eth1\n dhcp\n\nSave, then\n\n sudo systemctl restart dhcpcd\n\n- Static IP\n\n\n\n interface eth1\n static ip_address=192.168.10.2\/24\n static routers=192.168.10.1\n static domain_name_servers=8.8.8.8\n\nPS: Replace the IP address with your own network configure.", "char_count": 369, "token_estimate": 93 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Checking with ethtool", "chunk_index": 10, "content": "ethtool -i eth1\n ethtool -g eth1\n\n\"Poe_2.5G_002.png\"\n\"Poe_2.5G_003.png\"\nIf both commands report “Operation not supported”, the driver is hard-coded.", "char_count": 295, "token_estimate": 74 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Checking with ethtool > Ensure 2.5 GbE is actually negotiated", "chunk_index": 11, "content": "sudo ethtool eth1 | egrep 'Speed|Duplex|Auto-neg'\n\nIf you see Speed: 1000Mb\/s but the switch supports 2.5 G, force it once:\n\n sudo ethtool -s eth1 autoneg on advertise 0x8000000001028\n\n(0x8000000001028 enables 2.5G advertisement for the RTL8125 PHY .) Make it permanent via systemd:\n\n sudo systemctl edit --force --full set-eth1-2g5.service\n\nadd following parameters\n\n [Unit]\n Description=Force 2.5 GbE advertisement on eth1\n After=network-pre.target\n Before=network.target\n\n [Service]\n Type=oneshot\n RemainAfterExit=yes\n ExecStart=\/sbin\/ethtool -s eth1 autoneg on advertise 0x8000000001028\n\n [Install]\n WantedBy=multi-user.target\n\nsave it and enable the service.\n\n sudo systemctl enable --now set-eth1-2g5.service", "char_count": 753, "token_estimate": 189 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Checking with ethtool > Performance tuning (optional)", "chunk_index": 12, "content": "# Increase MTU\n\n sudo ip link set eth1 mtu 9000\n # Enable GRO\/GSO\n\n sudo ethtool -K eth1 gro on gso on", "char_count": 111, "token_estimate": 28 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Checking with ethtool > PoE+ power confirmation", "chunk_index": 13, "content": "Open a terminal and typing following commands:\n\n vcgencmd get_throttled\n\nAll bits 0 → power OK. If throttled=0x50000 (undervoltage), either the switch is not 802.3at capable or the cable is sub-standard.", "char_count": 206, "token_estimate": 52 }, { "title": "EP-0216-NEW", "rev_id": 16046, "heading_path": "Keywords", "chunk_index": 14, "content": "- 52Pi PCIe 2.5GbE PoE+ HAT, Raspberry Pi 5 network adapter, 2.5 Gbps PCIe NIC, PoE+ powered Pi, USB-C 25 W output, IEEE 802.3at injector, Link-speed, LEDs, GPIO pass-through, Single-cable networking, Realtek 2.5 GbE controller", "char_count": 229, "token_estimate": 58 } ] } }