Gigabyte Used Refurbished AM4 DDR4 Desktop motherboard AM4 B550 AORUS MASTER

1. AMD Socket AM4, support for: AMD Ryzen™ 5000 Series/ Ryzen™ 5000 G-Series/ Ryzen™ 4000 G-Series, Ryzen™ 3000 Series and Ryzen™ 3000 G-Series Processors

(Please refer “CPU Support List” for more information.)

1. AMD B550

1. 4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity) of system memory
2. Support for DDR4 5400(O.C.) / 5300(O.C.) / 5200(O.C.) / 5100(O.C.) / 4800(O.C.) / 4600(O.C.) / 4400(O.C.) / 4266(O.C.) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3733(O.C.) / 3600(O.C.) / 3466(O.C) / 3400(O.C.) / 3200 / 2933 / 2667 / 2400 / 2133 MHz memory modules
3. Dual channel memory architecture
4. Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules*
   * ECC memory (ECC mode) support varies by CPU
5. Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
6. Support for Extreme Memory Profile (XMP) memory modules

(Please refer “Memory Support List” for more information.)

1. 1 x HDMI port, supporting a maximum resolution of 4096×2160@60 Hz
   * Support for HDMI 2.1 version, HDCP 2.3, and HDR.

Maximum shared memory of 16 GB

1. Realtek^® ALC1220-VB codec
   * The back panel line out jack supports DSD audio.
2. Support for DTS:X^® Ultra
3. High Definition Audio
4. 2/4/5.1/7.1-channel
5. Support for S/PDIF Out

1. Realtek^® 2.5GbE LAN chip (2.5 Gbit/1 Gbit/100 Mbit)

1. WIFI a, b, g, n, ac with wave 2 features, ax, supporting 2.4/5 GHz Dual-Band
2. BLUETOOTH 5
3. Support for 11ax 160MHz wireless standard and up to 2.4 Gbps data rate
   * Actual data rate may vary depending on environment and equipment.

1. AMD Ryzen™ 5000 Series* and Ryzen™ 3000 Series Processors support PCIe 4.0 x16 mode
   * Actual support may vary by AMD CPU’s specification.
2. AMD Ryzen™ Ryzen™ 5000 G-Series and Ryzen™ 4000 G-Series Processors support PCIe 3.0 x16 mode
   * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
   * The PCIEX16 slot shares bandwidth with the M2B_CPU and M2C_CPU connectors. The PCIEX16 slot operates at up to x8 mode when a device is installed in the M2B_CPU or M2C_CPU connector.

2 x PCI Express x16 slots (PCIEX4_1/PCIEX4_2), integrated in the Chipset:

1. Supporting PCIe 3.0 x4 mode
   * The PCIEX4_2 slot shares bandwidth with the SATA3 4, 5 connectors. The PCIEX4_2 slot operates at up to x2 mode when a device is installed in the SATA3 4 or SATA3 5 connector.

1. AMD Ryzen™ 5000 Series and Ryzen™ 3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs
2. AMD Ryzen™ Ryzen™ 5000 G-Series and Ryzen™ 4000 G-Series Processors support SATA and PCIe 3.0 x4/x2 SSDs

2 x M.2 connectors (M2B_CPU/M2C_CPU), integrated in the CPU, supporting Socket 3, M key, type 2242/2280/22110 SSDs:

1. AMD Ryzen™ 5000 Series and Ryzen™ 3000 Series Processors support PCIe 4.0 x4/x2 SSDs
2. AMD Ryzen™ Ryzen™ 5000 G-Series and Ryzen™ 4000 G-Series Processors support PCIe 3.0 x4/x2 SSDs

6 x SATA 6Gb/s connectors, integrated in the Chipset:

1. Support for RAID 0, RAID 1, and RAID 10

1. 4 x USB 3.2 Gen 2 Type-A ports (red) on the back panel

Chipset:

1. 1 x USB Type-C™ port on the back panel, with USB 3.2 Gen 2 support
2. 1 x USB 3.2 Gen 2 Type-A port (red) on the back panel
3. 2 x USB 3.2 Gen 1 ports available through the internal USB header
4. 2 x USB 2.0/1.1 ports on the back panel

Chipset+2 USB 2.0 Hubs:

1. 8 x USB 2.0/1.1 ports (4 ports on the back panel, 4 ports available through the internal USB headers)

1. 1 x 24-pin ATX main power connector
2. 1 x 8-pin ATX 12V power connector
3. 1 x 4-pin ATX 12V power connector
4. 1 x CPU fan header
5. 1 x water cooling CPU fan header
6. 4 x system fan headers
7. 2 x system fan/water cooling pump headers
8. 2 x addressable LED strip headers
9. 2 x RGB LED strip headers
10. 1 x CPU cooler LED strip/RGB LED strip header
11. 3 x M.2 Socket 3 connectors
12. 6 x SATA 6Gb/s connectors
13. 1 x front panel header
14. 1 x front panel audio header
15. 1 x USB 3.2 Gen 1 header
16. 2 x USB 2.0/1.1 headers
17. 1 x noise detection header
18. 1 x Trusted Platform Module (TPM) header (2×6 pin, for the GC-TPM2.0_S module only)
19. 1 x Thunderbolt™ add-in card connector
20. 1 x Clear CMOS jumper
21. 2 x temperature sensor headers

＊All fan headers are subject to support AIO_Pump, Pump and high performance fan with the capability of delivering up to 2A/12V @ 24W.

1. 2 x SMA antenna connectors (2T2R)
2. 1 x HDMI port
3. 6 x USB 2.0/1.1 ports
4. 5 x USB 3.2 Gen 2 Type-A ports (red)
5. 1 x USB Type-C™ port, with USB 3.2 Gen 2 support
6. 1 x Q-Flash Plus button
7. 1 x RJ-45 port
8. 1 x optical S/PDIF Out connector
9. 5 x audio jacks

1. iTE^® I/O Controller Chip

1. Voltage detection
2. Temperature detection
3. Fan speed detection
4. Water cooling flow rate detection
5. Overheating warning
6. Fan fail warning
7. Fan speed control
   * Whether the fan (pump) speed control function is supported will depend on the fan (pump) you install.
8. Noise detection

1. 2 x 256 Mbit flash
2. Use of licensed AMI UEFI BIOS
3. Support for DualBIOS™
4. PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0

1. Support for APP Center
   * Available applications in APP Center may vary by motherboard model. Supported functions of each application may also vary depending on motherboard specifications.
   @BIOS
   EasyTune
   Fast Boot
   Game Boost
   ON/OFF Charge
   RGB Fusion
   Smart Backup
   System Information Viewer
2. Support for Q-Flash Plus
3. Support for Q-Flash
4. Support for Xpress Install

1. Norton^® Internet Security (OEM version)
2. XSplit Gamecaster + Broadcaster (12 months license)
3. Realtek^® 8125 Gaming LAN Bandwidth Control Utility

1. Support for Windows 11 64-bit
2. Support for Windows 10 64-bit

1. ATX Form Factor; 30.5cm x 24.4cm

1. Due to different Linux support condition provided by chipset vendors, please download Linux driver from chipset vendors’ website or 3rd party website.
2. Most hardware/software vendors may no longer offer drivers to support Win9X/ME/2000/XP. If drivers are available from the vendors, we will update them on the GIGABYTE website.