diff --git a/hosts/testagent/dev/configuration.nix b/hosts/testagent/dev/configuration.nix
index 571abf30..57651909 100644
--- a/hosts/testagent/dev/configuration.nix
+++ b/hosts/testagent/dev/configuration.nix
@@ -105,7 +105,7 @@
           socket_ip_address = "172.18.16.82";
           plug_type = "TAPOP100v2";
           switch_bot = "NONE";
-          usb_sd_mux_port = "/dev/sg1";
+          usb_sd_mux_port = "/dev/usb-sd-mux/id-000000001488";
           ext_drive_by-id = "usb-LinuxAut_sdmux_HS-SD_MMC_000000001488-0:0";
           threads = 4;
         };
diff --git a/hosts/testagent/prod/configuration.nix b/hosts/testagent/prod/configuration.nix
index 09e2259e..2986b175 100644
--- a/hosts/testagent/prod/configuration.nix
+++ b/hosts/testagent/prod/configuration.nix
@@ -94,7 +94,7 @@
           socket_ip_address = "172.18.16.45";
           plug_type = "TAPOP100v2";
           switch_bot = "NONE";
-          usb_sd_mux_port = "/dev/sg1";
+          usb_sd_mux_port = "/dev/usb-sd-mux/id-000000001184";
           ext_drive_by-id = "usb-LinuxAut_sdmux_HS-SD_MMC_000000001184-0:0";
           threads = 4;
         };
diff --git a/hosts/testagent/release/configuration.nix b/hosts/testagent/release/configuration.nix
index 7aa0ff40..8907c26c 100644
--- a/hosts/testagent/release/configuration.nix
+++ b/hosts/testagent/release/configuration.nix
@@ -116,7 +116,7 @@
           socket_ip_address = "172.18.16.41";
           plug_type = "TAPOP100v2";
           switch_bot = "NONE";
-          usb_sd_mux_port = "/dev/sg1";
+          usb_sd_mux_port = "/dev/usb-sd-mux/id-000000001267";
           ext_drive_by-id = "usb-LinuxAut_sdmux_HS-SD_MMC_000000001267-0:0";
           threads = 4;
         };