diff --git a/sys/dev/pccard/pccard_cis_quirks.c b/sys/dev/pccard/pccard_cis_quirks.c
index 57e8b4ab6e8c..925da6c69ea6 100644
--- a/sys/dev/pccard/pccard_cis_quirks.c
+++ b/sys/dev/pccard/pccard_cis_quirks.c
@@ -180,6 +180,27 @@ static struct pccard_config_entry pccard_ndc_nd5100_func0_cfe0 = {
 	0,			/* maxtwins */
 };
 
+static struct pccard_function pccard_sierra_a555_func1 = {
+	1,			/* function number */
+	PCCARD_FUNCTION_SERIAL,
+	0x24,			/* last cfe number */
+	0x700,			/* ccr_base */
+	0x73,			/* ccr_mask */
+};
+
+static struct pccard_config_entry pccard_sierra_a555_func1_cfe0 = {
+	0x22,			/* cfe number */
+	PCCARD_CFE_IO8 | PCCARD_CFE_IRQLEVEL, 
+	PCCARD_IFTYPE_IO,
+	1,			/* num_iospace */
+	0,			/* iomask */
+	{ { 0x0008, 0x3e8 } },	/* iospace */
+	0x3fbc,			/* irqmask */
+	0,			/* num_memspace */
+	{ },			/* memspace */
+	0,			/* maxtwins */
+};
+
 static struct pccard_cis_quirk pccard_cis_quirks[] = {
 	{ PCMCIA_VENDOR_3COM, PCMCIA_PRODUCT_3COM_3CXEM556, PCMCIA_CIS_INVALID, 
 	  &pccard_3cxem556_func0, &pccard_3cxem556_func0_cfe0 },
@@ -195,6 +216,18 @@ static struct pccard_cis_quirk pccard_cis_quirks[] = {
 	{ PCMCIA_VENDOR_3COM, PCMCIA_PRODUCT_3COM_3CCFEM556BI,
 	  PCMCIA_CIS_INVALID,
 	  &pccard_3ccfem556bi_func1, &pccard_3ccfem556bi_func1_cfe0 },
+	{ PCMCIA_VENDOR_SIERRA, PCMCIA_PRODUCT_SIERRA_A550,
+	  PCMCIA_CIS_INVALID,
+	  &pccard_sierra_a555_func1, &pccard_sierra_a555_func1_cfe0 },
+	{ PCMCIA_VENDOR_SIERRA, PCMCIA_PRODUCT_SIERRA_A555,
+	  PCMCIA_CIS_INVALID,
+	  &pccard_sierra_a555_func1, &pccard_sierra_a555_func1_cfe0 },
+	{ PCMCIA_VENDOR_SIERRA, PCMCIA_PRODUCT_SIERRA_A710,
+	  PCMCIA_CIS_INVALID,
+	  &pccard_sierra_a555_func1, &pccard_sierra_a555_func1_cfe0 },
+	{ PCMCIA_VENDOR_SIERRA, PCMCIA_PRODUCT_SIERRA_AC710,
+	  PCMCIA_CIS_INVALID,
+	  &pccard_sierra_a555_func1, &pccard_sierra_a555_func1_cfe0 },
 	{ PCMCIA_VENDOR_INVALID, PCMCIA_PRODUCT_INVALID, PCMCIA_CIS_SVEC_LANCARD,
 	  &pccard_sveclancard_func0, &pccard_sveclancard_func0_cfe0 },
 	{ PCMCIA_VENDOR_INVALID, PCMCIA_PRODUCT_INVALID, PCMCIA_CIS_NDC_ND5100_E,
diff --git a/sys/dev/pccard/pccarddevs b/sys/dev/pccard/pccarddevs
index c2a0bf79d4dc..eb0604940680 100644
--- a/sys/dev/pccard/pccarddevs
+++ b/sys/dev/pccard/pccarddevs
@@ -131,6 +131,7 @@ vendor PARALON			0x0183	Paralon Technologies Inc
 vendor KINGSTON			0x0186	Kingston
 vendor MELCO			0x018a	Melco Corporation
 vendor GLOBALVILLAGE		0x018c	Global Village
+vendor SIERRA			0x0192	Sierra
 vendor DAYNA			0x0194	Dayna Corporation
 vendor RAYTHEON			0x01a6	Raytheon
 vendor RACORE			0x01bf	Racore Computer Products
@@ -545,6 +546,12 @@ product SHARP PALDIO611S	0x0000  PALDIO 611S PC CARD
 /* Siemens */
 product SIEMENS SS1021		0x0002 Siemens SpeedStream 1021
 
+/* Sierra */
+product SIERRA AC710		0x0710 AC710/AC750/AC850
+product SIERRA A550		0xa550 A550
+product SIERRA A555		0xa555 A555
+product SIERRA A710		0xa710 A710/A750
+
 /* Simple Technology Products */
 product SIMPLETECH COMMUNICATOR288 0x0100 Simple Technology 28.8 Communicator
 /* Simpletech ID also used by Symbol */