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+--- 主题： X-SPDIF 3 - USB bus power spec is 1000mA (/showthread.php?tid=671)
X-SPDIF 3 - USB bus power spec is 1000mA - john_3365 - 02-05-2024
Hi @LI HUI @Wei Cao
On the Matrix website for X-SPDIF3 it says: "USB bus power supply: 5V/1000mA”
That doesn’t make any sense.
1000mA is more than USB3 spec (900mA)
And the X-SPDIF 3 USB port looks to be USB2.0 port (500mA)
Can you please clarifiy and update the wesbite ?
RE: X-SPDIF 3 - USB bus power spec is 1000mA - Wei Cao - 02-05-2024
Dear John,
Thanks for your feedbacks.
In actual implementation on most of the computers, the ability of USB power is higher than 500mA and 900m. A lot of USB devices requires higher than 5V/500mA power, but they actually comsume less power.
For example, a USB CD drive usually declare it requires 5V/1.5A power, but it works flawlessly on a USB 2.0 port without external power supply.
So does the X-SPDIF3, the X-SPIDIF3 will not consume so much power from the USB port actually.
The following device is a CD drive from Lenovo, it works fine on a USB 2.0 port.
[attachment=357]
RE: X-SPDIF 3 - USB bus power spec is 1000mA - john_3365 - 02-05-2024
(02-05-2024, 01:48 AM)Wei Cao 提到: Dear John,
Thanks for your feedbacks.
In actual implementation on most of the computers, the ability of USB power is higher than 500mA and 900m. A lot of USB devices requires higher than 5V/500mA power, but they actually comsume less power.
For example, a USB CD drive usually declare it requires 5V/1.5A power, but it works flawlessly on a USB 2.0 port without external power supply.
So does the X-SPDIF3, the X-SPIDIF3 will not consume so much power from the USB port actually.
The following device is a CD drive from Lenovo, it works fine on a USB 2.0 port.
Ok thanks Wei.
So X-SPDIF 3 is confirmed to work perfectly ok with USB 2.0 port ? There is no requirement for USB 3.0 port or USB-PD port ?
Is X-SPDIF 3 still in production ? I see many Matrix sellers showing out of stock for this product
RE: X-SPDIF 3 - USB bus power spec is 1000mA - LI HUI - 02-05-2024
(02-05-2024, 01:56 AM)john_3365 提到: Ok thanks Wei.Yes, the X-SPDIF3 is still in production.
So X-SPDIF 3 is confirmed to work perfectly ok with USB 2.0 port ? There is no requirement for USB 3.0 port or USB-PD port ?
Is X-SPDIF 3 still in production ? I see many Matrix sellers showing out of stock for this product
I have not heard of any compatibility issue of the X-SPDIF3 with USB 2.0 and 3.0 ports, but I don't know if it is compatible with PD port.
RE: X-SPDIF 3 - USB bus power spec is 1000mA - john_3365 - 02-05-2024
(02-05-2024, 02:04 AM)LI HUI 提到:(02-05-2024, 01:56 AM)john_3365 提到: Ok thanks Wei.Yes, the X-SPDIF3 is still in production.
So X-SPDIF 3 is confirmed to work perfectly ok with USB 2.0 port ? There is no requirement for USB 3.0 port or USB-PD port ?
Is X-SPDIF 3 still in production ? I see many Matrix sellers showing out of stock for this product
I have not heard of any compatibility issue of the X-SPDIF3 with USB 2.0 and 3.0 ports, but I don't know if it is compatible with PD port.
Ok thanks.
My question is more about power requirement - USB 2.0 500mA is enough for X-SPDIF 3 to full function correctly ?
We don't need to provide more power with USB 3 or USB-PD power ?
RE: X-SPDIF 3 - USB bus power spec is 1000mA - LI HUI - 02-05-2024
(02-05-2024, 02:06 AM)john_3365 提到:Yes the X-SPDIF3 works flawlessly on a USB 2.0 port.(02-05-2024, 02:04 AM)LI HUI 提到:(02-05-2024, 01:56 AM)john_3365 提到: Ok thanks Wei.Yes, the X-SPDIF3 is still in production.
So X-SPDIF 3 is confirmed to work perfectly ok with USB 2.0 port ? There is no requirement for USB 3.0 port or USB-PD port ?
Is X-SPDIF 3 still in production ? I see many Matrix sellers showing out of stock for this product
I have not heard of any compatibility issue of the X-SPDIF3 with USB 2.0 and 3.0 ports, but I don't know if it is compatible with PD port.
Ok thanks.
My question is more about power requirement - USB 2.0 500mA is enough for X-SPDIF 3 to full function correctly ?
We don't need to provide more power with USB 3 or USB-PD power ?
RE: X-SPDIF 3 - USB bus power spec is 1000mA - john_3365 - 02-05-2024
Ok thanks LI
Maybe the website should replace the 1000mA mentioned and just state USB 2.0 500mA port
To avoid this confusion
RE: X-SPDIF 3 - USB bus power spec is 1000mA - LI HUI - 02-05-2024
(02-05-2024, 02:11 AM)john_3365 提到: Ok thanks LIThanks for your suggestions.
Maybe the website should replace the 1000mA mentioned and just state USB 2.0 500mA port
To avoid this confusion