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HP t620: Hardware 


 


 

 



HP t620 Thin Client

The HP t620 seems to be following the trend where the more modern thin clients are on the larger size. The t620 was launched in December 2013 and comes in two form factors - the t620 (which is what is described here) and the t620 PLUS which is a fatter version that will accommodate an expansion card. The first two bullet points from the press release read:

  • Powerful processing with AMD processors. The combination of an AMD GX dual- or quad-core processor and AMD Radeon HD professional graphics gives the HP t620 strong multimedia performance and makes it up to 50 percent faster than the HP t610. The HP t620's completely redesigned chassis includes advanced passive cooling for fan-less support of quad-core processors, helping businesses reduce the number of service calls and the need for product refreshes.

  • Flexibility to drive up to four displays. The HP t620 is the company's first thin client capable of powering two 30-inch diagonal 2,560 x 1,600 displays with the standard chassis. With a factory-installed add-in video card, the HP t620 PLUS can support up to four displays, allowing users to increase productivity by viewing information on multiple monitors.

My t620 doesn't carry a manufacturing date but the antenna parts carry a label dated 2014/07/30 and the BIOS is dated 10/09/2014.

Specifications

Processor & Graphics
   Type
   Speed
   Graphics
or
   Type
   Speed
   Graphics
AMD G-Series GX-415GA SOC: quad-core APU
1.5GHz
Radeon HD 8330E graphics

AMD G-Series GX-217GA SOC: dual-core APU
1.65GHz
Radeon HD 8280E graphics
Memory
   Flash
   RAM
1GB/2GB/16GB/32GB/64GB/128GB
2GB (max 16GB)
Ports
   Network
   USB


   Serial
   Parallel
   PS/2
   Video
10/100/1000
4 x USB2.0 (2 front, 2 rear)
2 x USB2.0 (internal)
2 x USB3.0 (front)
1
0
2 (Kybd and Mouse)
2 x Display Port
Power
   Power
   Plug
   Off
   Idle
   Running
19.5V 3.33A (label)
Coax 4.8mm/1.8mm
6W
~11W
~16W
Dimensions
H x W x D (mm)209 x 58.4 x 215 (Excluding Stand)

The embedded operating system is one of:

  • HP ThinPro (32-bit)
  • HP Smart Zero Core (32-bit)
  • Windows Embedded Standard 7E (32-bit)
  • Windows Embedded Standard 7P (64-bit)
  • Windows Embedded 8 Standard (64-bit)
  • Windows 10 IoT Enterprise (64-bit)

My example is fitted with Windows Embedded Standard 7E.

Power SupplyPSU label

The t620 is supplied with a 65W 19.5V 3.33A DC supply with a 4.8mm/1.8mm coax connector. (See photo right for the connector).

My Power Meter shows that the PSU manages to draw 4W on its own without the t620 connected.

CPU

The CPUs fitted to the t620 are from the first generation of AMD's Embedded G-Series System-on-Chip (SOC).

From the linux cpuinfo data for the Dual Core processor fitted to my t620:

vendor_id :AuthenticAMD
cpu family :22
model :0
model name :AMD GX-217GA SOC with Radeon(tm) HD Graphics
stepping :1
flags :fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nonstop_tsc extd_apicid aperfmperf eagerfpu pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext perfctr_l2 arat hw_pstate proc_feedback npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold vmmcall bmi1 xsaveopt

Other CPU options are the quad-core GX-415GA or GX-420CA.

PCI

From the linux lspci command:

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8280E]
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kabini HDMI/DP Audio
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 0
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 01)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 39)
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 39)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 3a)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 02)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Function 5
01:00.0 Network controller: Broadcom Corporation BCM43228 802.11a/b/g/n
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
                           RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)

Expansion

HP t620 circuit board The circuit board is shown right. I have removed the metal screening box that normally covers the RAM. Click on the image for a larger version.

Flash: Early production systems were built with both a mSATA socket and a M.2 socket to facilitate a transition from one form factor to the other during the product's production life. The mSATA socket was subsequently removed from production at the end of 2014; since that time all systems are built with a single M.2 socket. My example has a single M.2 socket carrying the 16GB flash module. The module is a Sandisk U110 M.2 2242 which the datasheet tells me is 22.00mm x 42.00mm x 3.5mm in size.

RAM: There are two on-board sockets to take DDR3L SODIMMs. The datasheet gives the data transfer rate as 1,600 MT/s. In my case there is a single 4GB SODIMM fitted. The Samsung part is marked 4G 1Rx8 PC3L-12800s-11-13-B4 and the part number is M471B5173QH0-YK0

USB: There are a plethora of USB connections in the t620. There are four sockets on the front panel. Two of these are USB2.0 and two are to the USB 3.0 standard. The rear panel carries two USB 2.0 sockets. Finally there are two more USB 2.0 sockets fitted internally. Unlike earlier HP thin clients like the t5730 where there was a separate internal 'secure' compartment for whatever was plugged into these ports, with the t620 the sockets are directly mounted on the motherboard. In the photo you can see them top left (Flash drive maximum dimensions: 65mm (L) x 25mm (W) x 10mm (H)) and bottom middle (Flash drive maximum dimensions: 55mm (L) x 16mm (W) x 8mm (H)).

Mini PCI-E: The t620 has a Mini-PCIe slot for a wireless network card. This may be fitted with one of: Broadcom 802.11n, Broadcom 801.11ac or Intel 802.11ac. From the PCI listing above you can see mine is a Broadcom BCM43228.

Click here for a larger photo of the motherboard.

Additional photos

HP t620 circuit board
This photo is of the corner of the board by the power socket. It shows the M.2 flash drive with the ribbon cable to the serial port passing over it, the wireless card and one of the internal USB sockets. There is also a black socket labelled VGA. The docs do mention a factory-fit option of a VGA output. In September 2017 Abdul confirmed my guess that this is where it's connected and that the VGA socket replaces one of the serial ports (on a 'plus') on the back panel.

There is also a 6-pin header on the edge of the board with a link on the centre pins. I don't know what this does.

HP t620 circuit board
This photo is of the two RAM SODIMM sockets. Just to the left is where the expansion connector is fitted on the t620 PLUS.

HP t620 circuit board
On this edge of the board you can see:

 


Any comments? email me. Added April 2017    Last update September 2017