diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
index d05eb9e9e6..b2a08572fe 100644
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
@@ -1123,7 +1123,7 @@ SdCardIdentification (
 
       SdMmcHcInitClockFreq (PciIo, Slot, Private->Capability[Slot]);
 
-      gBS->Stall (1);
+      gBS->Stall (1000);
 
       SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_PRESENT_STATE, TRUE, sizeof (PresentState), &PresentState);
       if (((PresentState >> 20) & 0xF) != 0xF) {
diff --git a/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c b/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
index 8f7ecf9395..cbee947993 100644
--- a/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
+++ b/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c
@@ -2832,7 +2832,7 @@ SdPeimIdentification (
 
       SdPeimHcInitClockFreq (Slot->SdHcBase);
 
-      MicroSecondDelay (1);
+      MicroSecondDelay (1000);
 
       SdPeimHcRwMmio (Slot->SdHcBase + SD_HC_PRESENT_STATE, TRUE, sizeof (PresentState), &PresentState);
       if (((PresentState >> 20) & 0xF) != 0xF) {